diff --git a/dist/changes-5.12.5 b/dist/changes-5.12.5
new file mode 100644
index 0000000000000000000000000000000000000000..15f0bcde679ed773d8fe66bcbf3a32c06e326d9b
--- /dev/null
+++ b/dist/changes-5.12.5
@@ -0,0 +1,80 @@
+Qt 5.12.5 is a bug-fix release. It maintains both forward and backward
+compatibility (source and binary) with Qt 5.12.0 through 5.12.4.
+
+For more details, refer to the online documentation included in this
+distribution. The documentation is also available online:
+
+https://doc.qt.io/qt-5/index.html
+
+The Qt version 5.12 series is binary compatible with the 5.11.x series.
+Applications compiled for 5.11 will continue to run with 5.12.
+
+Some of the changes listed in this file include issue tracking numbers
+corresponding to tasks in the Qt Bug Tracker:
+
+https://bugreports.qt.io/
+
+Each of these identifiers can be entered in the bug tracker to obtain more
+information about a particular change.
+
+****************************************************************************
+*                              Qt 5.12.5 Changes                           *
+****************************************************************************
+
+General
+-------
+
+  - [QTBUG-62106] Fixed possible crash after rapid tapping.
+  - [QTBUG-75884] Fixed crash on setHttpUserAgent.
+  - [QTBUG-76249] Fixed user-agent on some new windows.
+  - [QTBUG-76268] Fixed tab key send on minimize.
+  - [QTBUG-76347] Fixed duplicate events being send from tablets.
+  - [QTBUG-76828] Clear shared context on exit.
+  - [QTBUG-76958] Fixed possible crash when loading in background.
+
+Chromium
+--------
+
+ - Security fixes from Chromium up to version 76.0.3809.87, including:
+
+    - CVE-2019-5829
+    - CVE-2019-5831
+    - CVE-2019-5832
+    - CVE-2019-5837
+    - CVE-2019-5839
+    - CVE-2019-5842
+    - CVE-2019-5851
+    - CVE-2019-5852
+    - CVE-2019-5854
+    - CVE-2019-5855
+    - CVE-2019-5856
+    - CVE-2019-5857
+    - CVE-2019-5860
+    - CVE-2019-5861
+    - CVE-2019-5862
+    - CVE-2019-5865
+    - Critical security issue 977057
+    - Security bug 934161
+    - Security bug 939644
+    - Security bug 948172
+    - Security bug 948228
+    - Security bug 948944
+    - Security bug 950005
+    - Security bug 952849
+    - Security bug 956625
+    - Security bug 958457
+    - Security bug 958689
+    - Security bug 959193
+    - Security bug 959518
+    - Security bug 958717
+    - Security bug 960785
+    - Security bug 961674
+    - Security bug 961597
+    - Security bug 962083
+    - Security bug 964002
+    - Security bug 973893
+    - Security bug 974627
+    - Security bug 976050
+    - Security bug 981602
+    - Security bug 983850
+    - Security bug 983938
diff --git a/dist/changes-5.13.1 b/dist/changes-5.13.1
new file mode 100644
index 0000000000000000000000000000000000000000..9e3a49558d6c08fdec9cc2976ceb95d20a53f5fa
--- /dev/null
+++ b/dist/changes-5.13.1
@@ -0,0 +1,91 @@
+Qt 5.13.1 is a bug-fix release. It maintains both forward and backward
+compatibility (source and binary) with Qt 5.13.0.
+
+For more details, refer to the online documentation included in this
+distribution. The documentation is also available online:
+
+https://doc.qt.io/qt-5/index.html
+
+The Qt version 5.13 series is binary compatible with the 5.12.x series.
+Applications compiled for 5.12 will continue to run with 5.13.
+
+Some of the changes listed in this file include issue tracking numbers
+corresponding to tasks in the Qt Bug Tracker:
+
+https://bugreports.qt.io/
+
+Each of these identifiers can be entered in the bug tracker to obtain more
+information about a particular change.
+
+****************************************************************************
+*                              Qt 5.13.1 Changes                           *
+****************************************************************************
+
+General
+-------
+
+  - [QTBUG-62106] Fixed possible crash after rapid tapping.
+  - [QTBUG-76226] Fixed PDF viewer on URLs with percent-encoded characters.
+  - [QTBUG-76249] Fixed user-agent on some new windows.
+  - [QTBUG-76958] Fixed possible crash when loading in background.
+
+
+Chromium
+--------
+
+ - Security fixes from Chromium up to version 76.0.3809.87, including:
+
+    - CVE-2019-5829
+    - CVE-2019-5831
+    - CVE-2019-5832
+    - CVE-2019-5836
+    - CVE-2019-5837
+    - CVE-2019-5839
+    - CVE-2019-5842
+    - CVE-2019-5851
+    - CVE-2019-5852
+    - CVE-2019-5854
+    - CVE-2019-5855
+    - CVE-2019-5856
+    - CVE-2019-5857
+    - CVE-2019-5860
+    - CVE-2019-5861
+    - CVE-2019-5862
+    - CVE-2019-5865
+    - Critical security issue 977057
+    - Security issue 934161
+    - Security issue 939644
+    - Security issue 948172
+    - Security issue 948228
+    - Security issue 948944
+    - Security issue 950005
+    - Security issue 952849
+    - Security issue 954762
+    - Security issue 956625
+    - Security issue 958717
+    - Security issue 958457
+    - Security issue 958689
+    - Security issue 959192
+    - Security issue 959193
+    - Security issue 959518
+    - Security issue 960785
+    - Security issue 961597
+    - Security issue 961674
+    - Security issue 962083
+    - Security issue 962572
+    - Security issue 964002
+    - Security issue 964795
+    - Security issue 964928
+    - Security issue 973893
+    - Security issue 974627
+    - Security issue 976050
+    - Security issue 981602
+    - Security issue 983850
+    - Security issue 983938
+
+
+Qt WebEngine Core
+-----------------
+
+ - [QTBUG-60203] QWebEngineUrlRequestInterceptor can now set referer header.
+
diff --git a/examples/webenginewidgets/notifications/doc/src/notifications.qdoc b/examples/webenginewidgets/notifications/doc/src/notifications.qdoc
index 2c999e7e10454ff2cb44fb955d860f9fede86d5f..ec932f90c0a21067f7a2ef7b3d972cd197f6f0f2 100644
--- a/examples/webenginewidgets/notifications/doc/src/notifications.qdoc
+++ b/examples/webenginewidgets/notifications/doc/src/notifications.qdoc
@@ -44,22 +44,22 @@
 
     In this example, we create an internal HTML page that is added through
     a resource collection file (.qrc). The page displays buttons for requesting
-    permissions and creating a notification. In addition, it contains JavaScript
-    logic for triggering these actions.
+    permissions and contains necessary JavaScript code to trigger this request:
 
     \quotefromfile webenginewidgets/notifications/data/index.html
     \skipto Notification.requestPermission
     \printline requestPermission
-    \dots
-    \skipto if
-    \printuntil createNotification()
-    \printline /^})$/
+    \skipuntil resetPermission
+    \printuntil /\}\)$/
+
+    Also page contains a button for creating a notification. The following
+    JavaScript constructions are executed on the press event:
 
     \quotefromfile webenginewidgets/notifications/data/index.html
     \skipto createNotification()
-    \printuntil Notification
-    \dots
-    \printline /^})$/
+    \printuntil new Notification
+    \skipuntil Notification was created
+    \printline }
 
     \section1 Main Function
 
@@ -127,7 +127,8 @@
 
     \skipto QWebEngineNotification::closed
     \printuntil QTimer
-    \printline /^\}/
+    \skipto /\}/
+    \printline /\}/
 
     \section2 Closing Active Notification
 
@@ -138,9 +139,7 @@
     destroy the notification object through the \c std::unique_ptr::reset() method.
 
     \skipto onClosed
-    \dots
-    \skipto hide()
-    \printuntil reset
+    \printuntil }
 
     \section2 Implementing User Interaction
 
@@ -152,5 +151,6 @@
 
     \skipto mouseReleaseEvent
     \printuntil onClosed
-    \printuntil /^\}/
+    \printline /\}$/
+    \printline /\}$/
 */
diff --git a/examples/webenginewidgets/notifications/main.cpp b/examples/webenginewidgets/notifications/main.cpp
index 661b82ff5b889155920a9b2cb7ee55814f72fbbe..c3039b9e0dadd3da07de7d4f22655a3bf4e04fd8 100644
--- a/examples/webenginewidgets/notifications/main.cpp
+++ b/examples/webenginewidgets/notifications/main.cpp
@@ -56,11 +56,13 @@
 #include <QWebEngineProfile>
 #include <QWebEngineView>
 
-class WebEnginePage : public QWebEnginePage {
+class WebEnginePage : public QWebEnginePage
+{
 public:
     WebEnginePage(QWidget *parent) : QWebEnginePage(parent) { }
 
-    bool acceptNavigationRequest(const QUrl &url, NavigationType, bool) override {
+    bool acceptNavigationRequest(const QUrl &url, NavigationType, bool) override
+    {
         if (url.scheme() != "https")
             return true;
         QDesktopServices::openUrl(url);
@@ -81,16 +83,15 @@ int main(int argc, char *argv[])
 
     QObject::connect(view.page(), &QWebEnginePage::featurePermissionRequested,
                      [&] (const QUrl &origin, QWebEnginePage::Feature feature) {
-        if (feature != QWebEnginePage::Notifications)
-            return;
-        view.page()->setFeaturePermission(origin, feature, QWebEnginePage::PermissionGrantedByUser);
-    });
+                         if (feature != QWebEnginePage::Notifications)
+                             return;
+                         view.page()->setFeaturePermission(origin, feature, QWebEnginePage::PermissionGrantedByUser);
+                     });
 
     auto profile = view.page()->profile();
     auto popup = new NotificationPopup(&view);
-    profile->setNotificationPresenter([&] (std::unique_ptr<QWebEngineNotification> notification) {
-        popup->present(notification);
-    });
+    profile->setNotificationPresenter([&] (std::unique_ptr<QWebEngineNotification> notification)
+                                      { popup->present(notification); });
 
     view.resize(640, 480);
     view.show();
diff --git a/examples/webenginewidgets/notifications/notificationpopup.h b/examples/webenginewidgets/notifications/notificationpopup.h
index fcbb003b97aa8d5281b261b08a38dee32edfe86d..d211c79961e343c74968e8af9497156e59a4a9d0 100644
--- a/examples/webenginewidgets/notifications/notificationpopup.h
+++ b/examples/webenginewidgets/notifications/notificationpopup.h
@@ -61,14 +61,16 @@
 
 #include <memory>
 
-class NotificationPopup : public QWidget {
+class NotificationPopup : public QWidget
+{
     Q_OBJECT
 
     QLabel m_icon, m_title, m_message;
     std::unique_ptr<QWebEngineNotification> notification;
 
 public:
-    NotificationPopup(QWidget *parent) : QWidget(parent) {
+    NotificationPopup(QWidget *parent) : QWidget(parent)
+    {
         setWindowFlags(Qt::ToolTip);
         auto rootLayout = new QHBoxLayout(this);
 
@@ -91,7 +93,8 @@ public:
         adjustSize();
     }
 
-    void present(std::unique_ptr<QWebEngineNotification> &newNotification) {
+    void present(std::unique_ptr<QWebEngineNotification> &newNotification)
+    {
         if (notification) {
             notification->close();
             notification.reset();
@@ -114,14 +117,16 @@ public:
     }
 
 protected slots:
-    void onClosed() {
+    void onClosed()
+    {
         hide();
         notification->close();
         notification.reset();
     }
 
 protected:
-    void mouseReleaseEvent(QMouseEvent *event) override {
+    void mouseReleaseEvent(QMouseEvent *event) override
+    {
         QWidget::mouseReleaseEvent(event);
         if (notification && event->button() == Qt::LeftButton) {
             notification->click();
diff --git a/src/buildtools/config/linux.pri b/src/buildtools/config/linux.pri
index 998aedc40e84cf5baedf7e2419fe5f76c712da10..493ea9766532ef8427ac529aa8b07726a5eaa4bf 100644
--- a/src/buildtools/config/linux.pri
+++ b/src/buildtools/config/linux.pri
@@ -164,9 +164,21 @@ host_build {
         gn_args += use_system_libpng=true
         qtConfig(webengine-printing-and-pdf): gn_args += pdfium_use_system_libpng=true
     }
-    qtConfig(webengine-system-jpeg): gn_args += use_system_libjpeg=true
-    qtConfig(webengine-system-freetype): gn_args += use_system_freetype=true
-    qtConfig(webengine-system-harfbuzz): gn_args += use_system_harfbuzz=true
+    qtConfig(webengine-system-jpeg) {
+        gn_args += use_system_libjpeg=true
+    } else {
+        gn_args += use_system_libjpeg=false
+    }
+    qtConfig(webengine-system-freetype) {
+        gn_args += use_system_freetype=true
+    } else {
+        gn_args += use_system_freetype=false
+    }
+    qtConfig(webengine-system-harfbuzz) {
+        gn_args += use_system_harfbuzz=true
+    } else {
+        gn_args += use_system_harfbuzz=false
+    }
     !qtConfig(webengine-system-glib): gn_args += use_glib=false
     qtConfig(webengine-pulseaudio) {
         gn_args += use_pulseaudio=true
diff --git a/src/core/api/qwebenginenotification.cpp b/src/core/api/qwebenginenotification.cpp
index f91eabd25ec589e41a8a513c8f4952228bae8716..abc63fed2c76626c2280551181b0855efaeee1b0 100644
--- a/src/core/api/qwebenginenotification.cpp
+++ b/src/core/api/qwebenginenotification.cpp
@@ -47,6 +47,22 @@ QT_BEGIN_NAMESPACE
 
 using QtWebEngineCore::UserNotificationController;
 
+/*!
+    \qmltype WebEngineNotification
+    \instantiates QWebEngineNotification
+    \inqmlmodule QtWebEngine
+    \since QtWebEngine 1.9
+    \brief Encapsulates the data of an HTML5 web notification.
+
+    This type contains the information and API for HTML5 desktop and push notifications.
+
+    Web engine notifications are passed to the user in the
+    \l WebEngineProfile::presentNotification() signal.
+
+    For more information about how to handle web notification, see the
+    \l{WebEngine Notifications Example}{Notification Example}.
+*/
+
 /*!
     \class QWebEngineNotification
     \brief The QWebEngineNotification class encapsulates the data of an HTML5 web notification.
@@ -56,10 +72,11 @@ using QtWebEngineCore::UserNotificationController;
 
     This class contains the information and API for HTML5 desktop and push notifications.
 
-    Web engine notifications are passed to the user in the
-    \l QWebEngineProfile::setNotificationPresenter() and
-    \l QQuickWebEngineProfile::presentNotification() calls and the
-    \l WebEngineProfile::presentNotification() signal.
+    Web engine notifications are passed to the user through the custom handler
+    provided with the \l QWebEngineProfile::setNotificationPresenter() call.
+
+    For more information about how to handle web notification, see the
+    \l{WebEngine Notifications Example}{Notification Example}.
 */
 
 class QWebEngineNotificationPrivate : public UserNotificationController::Client {
@@ -114,6 +131,10 @@ bool QWebEngineNotification::matches(const QWebEngineNotification *other) const
     return tag() == other->tag() && origin() == other->origin();
 }
 
+/*!
+    \qmlproperty bool WebEngineNotification::title
+    \brief The title of the notification.
+*/
 /*!
     \property QWebEngineNotification::title
     \brief The title of the notification.
@@ -125,6 +146,10 @@ QString QWebEngineNotification::title() const
     return d ? d->controller->title() : QString();
 }
 
+/*!
+    \qmlproperty string WebEngineNotification::message
+    \brief The body of the notification message.
+*/
 /*!
     \property QWebEngineNotification::message
     \brief The body of the notification message.
@@ -137,6 +162,13 @@ QString QWebEngineNotification::message() const
     return d ? d->controller->body() : QString();
 }
 
+/*!
+    \qmlproperty string WebEngineNotification::tag
+    \brief The tag of the notification message.
+
+    New notifications that have the same tag and origin URL as an existing
+    one should replace or update the old notification with the same tag.
+*/
 /*!
     \property QWebEngineNotification::tag
     \brief The tag of the notification message.
@@ -152,6 +184,10 @@ QString QWebEngineNotification::tag() const
     return d ? d->controller->tag() : QString();
 }
 
+/*!
+    \qmlproperty url WebEngineNotification::origin
+    \brief The URL of the page sending the notification.
+*/
 /*!
     \property QWebEngineNotification::origin
     \brief The URL of the page sending the notification.
@@ -174,6 +210,12 @@ QImage QWebEngineNotification::icon() const
     return d ? d->controller->icon() : QImage();
 }
 
+/*!
+    \qmlproperty string WebEngineNotification::language
+    \brief The primary language for the notification's title and body.
+
+    Its value is a valid BCP 47 language tag, or the empty string.
+*/
 /*!
     \property QWebEngineNotification::language
     \brief The primary language for the notification's title and body.
@@ -188,6 +230,14 @@ QString QWebEngineNotification::language() const
     return d ? d->controller->language() : QString();
 }
 
+/*!
+    \qmlproperty enumeration WebEngineNotification::direction
+    \brief The text direction for the notification's title and body.
+
+    \value Qt.LeftToRight Items are laid out from left to right.
+    \value Qt.RightToLeft Items are laid out from right to left.
+    \value Qt.LayoutDirectionAuto The direction to lay out items is determined automatically.
+*/
 /*!
     \property QWebEngineNotification::direction
     \brief The text direction for the notification's title and body.
@@ -199,6 +249,12 @@ Qt::LayoutDirection QWebEngineNotification::direction() const
     return d ? d->controller->direction() : Qt::LayoutDirectionAuto;
 }
 
+/*!
+    \qmlmethod void WebEngineNotification::show()
+    Creates and dispatches a JavaScript \e {show event} on notification.
+
+    Should be called by the notification platform when the notification has been shown to user.
+*/
 /*!
     Creates and dispatches a JavaScript \e {show event} on notification.
 
@@ -211,6 +267,12 @@ void QWebEngineNotification::show() const
         d->controller->notificationDisplayed();
 }
 
+/*!
+    \qmlmethod void WebEngineNotification::click()
+    Creates and dispatches a JavaScript \e {click event} on notification.
+
+    Should be called by the notification platform when the notification is activated by the user.
+*/
 /*!
     Creates and dispatches a JavaScript \e {click event} on notification.
 
@@ -223,6 +285,13 @@ void QWebEngineNotification::click() const
         d->controller->notificationClicked();
 }
 
+/*!
+    \qmlmethod void WebEngineNotification::close()
+    Creates and dispatches a JavaScript \e {close event} on notification.
+
+    Should be called by the notification platform when the notification is closed,
+    either by the underlying platform or by the user.
+*/
 /*!
     Creates and dispatches a JavaScript \e {close event} on notification.
 
@@ -236,6 +305,12 @@ void QWebEngineNotification::close() const
         d->controller->notificationClosed();
 }
 
+/*!
+    \qmlsignal WebEngineNotification::closed()
+
+    This signal is emitted when the web page calls close steps for the notification,
+    and it no longer needs to be shown.
+*/
 /*!
     \fn void QWebEngineNotification::closed()
 
diff --git a/src/core/certificate_error_controller.cpp b/src/core/certificate_error_controller.cpp
index 71465a1afabd955c41cc73f81bafb267b666185e..89c2980e33022e612762364209a8c0701a847320 100644
--- a/src/core/certificate_error_controller.cpp
+++ b/src/core/certificate_error_controller.cpp
@@ -79,14 +79,14 @@ CertificateErrorControllerPrivate::CertificateErrorControllerPrivate(int cert_er
                                                                      const net::SSLInfo& ssl_info,
                                                                      const GURL &request_url,
                                                                      content::ResourceType resource_type,
-                                                                     bool _overridable,
+                                                                     bool fatal_error,
                                                                      bool strict_enforcement,
                                                                      const base::Callback<void(content::CertificateRequestResultType)>& cb
                                                                     )
     : certError(CertificateErrorController::CertificateError(cert_error))
     , requestUrl(toQt(request_url))
     , resourceType(CertificateErrorController::ResourceType(resource_type))
-    , overridable(_overridable)
+    , fatalError(fatal_error)
     , strictEnforcement(strict_enforcement)
     , callback(cb)
 {
@@ -119,7 +119,7 @@ QUrl CertificateErrorController::url() const
 
 bool CertificateErrorController::overridable() const
 {
-    return d->overridable;
+    return !d->fatalError && !d->strictEnforcement;
 }
 
 bool CertificateErrorController::strictEnforcement() const
diff --git a/src/core/certificate_error_controller_p.h b/src/core/certificate_error_controller_p.h
index f3b0c23fa7442f8631b51b1abb59dfa555f3a687..d51a559d0fdbea6d88c342b37b18f96b3e4c1ae7 100644
--- a/src/core/certificate_error_controller_p.h
+++ b/src/core/certificate_error_controller_p.h
@@ -59,7 +59,7 @@ QT_BEGIN_NAMESPACE
 
 class CertificateErrorControllerPrivate {
 public:
-    CertificateErrorControllerPrivate(int cert_error, const net::SSLInfo& ssl_info, const GURL& request_url, content::ResourceType resource_type, bool overridable, bool strict_enforcement, const base::Callback<void(content::CertificateRequestResultType)>& callback);
+    CertificateErrorControllerPrivate(int cert_error, const net::SSLInfo& ssl_info, const GURL& request_url, content::ResourceType resource_type, bool fatal_error, bool strict_enforcement, const base::Callback<void(content::CertificateRequestResultType)>& callback);
 
     void accept(bool accepted);
 
@@ -68,7 +68,7 @@ public:
     QDateTime validStart;
     QDateTime validExpiry;
     CertificateErrorController::ResourceType resourceType;
-    bool overridable;
+    bool fatalError;
     bool strictEnforcement;
     const base::Callback<void(content::CertificateRequestResultType)> callback;
     QList<QSslCertificate> chain;
diff --git a/src/core/content_browser_client_qt.cpp b/src/core/content_browser_client_qt.cpp
index ee420d25892ee37d69f77a9e1e54209ca1b3033f..5816749c80a7ca9c31237e483e17be431f99fdbe 100644
--- a/src/core/content_browser_client_qt.cpp
+++ b/src/core/content_browser_client_qt.cpp
@@ -393,7 +393,7 @@ void ContentBrowserClientQt::AllowCertificateError(content::WebContents *webCont
                             ssl_info,
                             request_url,
                             resource_type,
-                            !IsCertErrorFatal(cert_error),
+                            IsCertErrorFatal(cert_error),
                             strict_enforcement,
                             callback)));
     contentsDelegate->allowCertificateError(errorController);
diff --git a/src/core/core_common.pri b/src/core/core_common.pri
index 2a9dc90c0454e6bad585e6f68035a5d7bc892134..e10d14267fc38fc803d3f3f71d5bb331f7230100 100644
--- a/src/core/core_common.pri
+++ b/src/core/core_common.pri
@@ -18,6 +18,3 @@ CONFIG -= ltcg
 # Chromium requires C++14
 CONFIG += c++14
 
-#QTBUG-73216 ci has to be updated with latest yocto
-boot2qt: CONFIG -= use_gold_linker
-
diff --git a/src/core/file_picker_controller.cpp b/src/core/file_picker_controller.cpp
index 3e64afd2090f021246fe949632665fa4416faa1e..63b93c502c529b1b74327ee0ff41b41513ae5484 100644
--- a/src/core/file_picker_controller.cpp
+++ b/src/core/file_picker_controller.cpp
@@ -39,6 +39,9 @@
 
 #include "file_picker_controller.h"
 #include "type_conversion.h"
+#if defined(OS_WIN)
+#include "base/files/file_path.h"
+#endif
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/file_select_listener.h"
@@ -64,12 +67,31 @@ FilePickerController::~FilePickerController() = default;
 void FilePickerController::accepted(const QStringList &files)
 {
     QStringList stringList;
-
-    for (const QString &file : files) {
-        if (QDir(file).isAbsolute())
-            stringList.append(file);
-        else
-            qWarning("Ignore invalid item in FilePickerController::accepted(QStringList): %s", qPrintable(file));
+    stringList.reserve(files.count());
+
+    for (const QString &urlString : files) {
+        // We accept strings on both absolute-path and file-URL form:
+        if (QDir::isAbsolutePath(urlString)) {
+            QString absolutePath = QDir::fromNativeSeparators(urlString);
+#if defined(OS_WIN)
+            if (absolutePath.at(0).isLetter() && absolutePath.at(1) == QLatin1Char(':') && !base::FilePath::IsSeparator(absolutePath.at(2).toLatin1()))
+                qWarning("Ignoring invalid item in FilePickerController::accepted(QStringList): %s", qPrintable(urlString));
+            else
+#endif
+                stringList.append(absolutePath);
+        } else {
+            QUrl url(urlString, QUrl::StrictMode);
+            if (url.isLocalFile() && QDir::isAbsolutePath(url.toLocalFile())) {
+                QString absolutePath = url.toLocalFile();
+#if defined(OS_WIN)
+                if (absolutePath.at(0).isLetter() && absolutePath.at(1) == QLatin1Char(':') && !base::FilePath::IsSeparator(absolutePath.at(2).toLatin1()))
+                    qWarning("Ignoring invalid item in FilePickerController::accepted(QStringList): %s", qPrintable(urlString));
+                else
+#endif
+                    stringList.append(absolutePath);
+            } else
+                qWarning("Ignoring invalid item in FilePickerController::accepted(QStringList): %s", qPrintable(urlString));
+        }
     }
 
     FilePickerController::filesSelectedInChooser(stringList);
@@ -77,21 +99,10 @@ void FilePickerController::accepted(const QStringList &files)
 
 void FilePickerController::accepted(const QVariant &files)
 {
-    QStringList stringList;
-    QList<QUrl> urlList = QUrl::fromStringList(files.toStringList());
-
-    if (urlList.isEmpty()) {
-        FilePickerController::accepted(stringList);
-    } else {
-        for (const QUrl &url : qAsConst(urlList)) {
-            if (url.isValid() && url.scheme() == "file" && !url.path().isEmpty())
-                stringList.append(url.path());
-            else
-                qWarning("Ignore invalid item in FilePickerController::accepted(QVariant): %s", qPrintable(url.toString()));
-        }
+    if (!files.canConvert(QVariant::StringList))
+        qWarning("An unhandled type '%s' was provided in FilePickerController::accepted(QVariant)", files.typeName());
 
-        FilePickerController::accepted(stringList);
-    }
+    accepted(files.toStringList());
 }
 
 void FilePickerController::rejected()
diff --git a/src/core/profile_io_data_qt.cpp b/src/core/profile_io_data_qt.cpp
index 38fe56f7d63cfdcf5b5c5a2af26d4ffc781d7a33..5c87d87a29fbe86485b4a7e02db50407ad44bc41 100644
--- a/src/core/profile_io_data_qt.cpp
+++ b/src/core/profile_io_data_qt.cpp
@@ -239,9 +239,11 @@ extensions::ExtensionSystemQt* ProfileIODataQt::GetExtensionSystem()
 void ProfileIODataQt::initializeOnIOThread()
 {
     m_networkDelegate.reset(new NetworkDelegateQt(this));
+    m_hostResolver = net::HostResolver::CreateStandaloneResolver(nullptr);
     m_urlRequestContext.reset(new net::URLRequestContext());
     m_urlRequestContext->set_network_delegate(m_networkDelegate.get());
     m_urlRequestContext->set_enable_brotli(base::FeatureList::IsEnabled(features::kBrotliEncoding));
+    m_urlRequestContext->set_host_resolver(m_hostResolver.get());
     // this binds factory to io thread
     m_weakPtr = m_weakPtrFactory.GetWeakPtr();
     const std::lock_guard<QRecursiveMutex> lock(m_mutex);
@@ -338,11 +340,6 @@ void ProfileIODataQt::generateStorage()
     ct_verifier->AddLogs(ct_logs);
     m_storage->set_cert_transparency_verifier(std::move(ct_verifier));
     m_storage->set_ct_policy_enforcer(base::WrapUnique(new net::DefaultCTPolicyEnforcer()));
-//    static std::unique_ptr<net::HostResolverManager> s_hostResolverManager =
-//            std::make_unique<net::HostResolverManager>(net::HostResolver::Options(), nullptr);
-//    m_storage->set_host_resolver(net::HostResolver::CreateResolver(s_hostResolverManager.get()));
-    m_storage->set_host_resolver(net::HostResolver::CreateStandaloneResolver(nullptr));
-
     m_storage->set_ssl_config_service(std::make_unique<net::SSLConfigServiceDefaults>());
     if (!m_httpAuthPreferences) {
         m_httpAuthPreferences.reset(new net::HttpAuthPreferences());
diff --git a/src/core/profile_io_data_qt.h b/src/core/profile_io_data_qt.h
index 4a5b9f77d05d8040bcdd195ddb23992a5be872cd..00a4de2b080fbfeebeb6668e54d5c6ecb075f7df 100644
--- a/src/core/profile_io_data_qt.h
+++ b/src/core/profile_io_data_qt.h
@@ -56,6 +56,7 @@ class ClientCertStore;
 class DhcpPacFileFetcherFactory;
 class HttpAuthPreferences;
 class HttpNetworkSession;
+class HostResolver;
 class NetworkDelegate;
 class ProxyConfigService;
 class URLRequestContext;
@@ -157,6 +158,7 @@ private:
     std::unique_ptr<net::HttpAuthPreferences> m_httpAuthPreferences;
     std::unique_ptr<net::URLRequestJobFactory> m_jobFactory;
     std::unique_ptr<net::TransportSecurityPersister> m_transportSecurityPersister;
+    std::unique_ptr<net::HostResolver> m_hostResolver;
     base::WeakPtr<ProfileIODataQt> m_weakPtr;
     scoped_refptr<CookieMonsterDelegateQt> m_cookieDelegate;
     content::URLRequestInterceptorScopedVector m_requestInterceptors;
diff --git a/src/core/render_widget_host_view_qt.cpp b/src/core/render_widget_host_view_qt.cpp
index e741962fb18780b8a3ed59f5d53c45185f42815c..c986121928d45f8dc57ad054ec2022342be5a0ce 100644
--- a/src/core/render_widget_host_view_qt.cpp
+++ b/src/core/render_widget_host_view_qt.cpp
@@ -770,8 +770,11 @@ void RenderWidgetHostViewQt::OnUpdateTextInputStateCalled(content::TextInputMana
     }
 
     ui::TextInputType type = getTextInputType();
+#if QT_VERSION >= QT_VERSION_CHECK(5, 12, 0)
     m_delegate->setInputMethodHints(toQtInputMethodHints(getTextInputType()) | Qt::ImhNoPredictiveText | Qt::ImhNoTextHandles | Qt::ImhNoEditMenu);
-
+#else
+    m_delegate->setInputMethodHints(toQtInputMethodHints(getTextInputType()) | Qt::ImhNoPredictiveText);
+#endif
     m_surroundingText = toQt(state->value);
     // Remove IME composition text from the surrounding text
     if (state->composition_start != -1 && state->composition_end != -1)
@@ -1200,7 +1203,11 @@ QVariant RenderWidgetHostViewQt::inputMethodQuery(Qt::InputMethodQuery query)
         // TODO: Implement this
         return QVariant(); // No limit.
     case Qt::ImHints:
+#if QT_VERSION >= QT_VERSION_CHECK(5, 12, 0)
         return int(toQtInputMethodHints(getTextInputType()) | Qt::ImhNoPredictiveText | Qt::ImhNoTextHandles | Qt::ImhNoEditMenu);
+#else
+        return int(toQtInputMethodHints(getTextInputType()) | Qt::ImhNoPredictiveText);
+#endif
     default:
         return QVariant();
     }
diff --git a/src/core/touch_selection_controller_client_qt.cpp b/src/core/touch_selection_controller_client_qt.cpp
index da3c78b8ade574006ff6d23c2a9d7032c270aa5c..0f44210d18e8bd205fe769d2d3fe9c535c6779f9 100644
--- a/src/core/touch_selection_controller_client_qt.cpp
+++ b/src/core/touch_selection_controller_client_qt.cpp
@@ -315,7 +315,7 @@ void TouchSelectionControllerClientQt::showMenu()
 
     WebContentsAdapterClient *adapterClient = m_rwhv->adapterClient();
     Q_ASSERT(adapterClient);
-    adapterClient->showTouchSelectionMenu(m_menuController.get(),
+    adapterClient->showTouchSelectionMenu(m_menuController.data(),
                                           QRect(toQt(gfx::ToEnclosingRect(anchor_rect))),
                                           QSize(toQt(gfx::ToRoundedSize(max_handle_size))));
     m_menuShowing = true;
diff --git a/src/core/web_event_factory.cpp b/src/core/web_event_factory.cpp
index 7f5306e679b581c83ebda56ffdd0ebe2a4906f30..3598c1c78eb2539cc9099dfd47ba2782569da2b0 100644
--- a/src/core/web_event_factory.cpp
+++ b/src/core/web_event_factory.cpp
@@ -926,7 +926,7 @@ static ui::DomKey domKeyForQtKey(int qtKey)
         return ui::DomKey::ZENKAKU;
     case Qt::Key_Zenkaku_Hankaku:
         return ui::DomKey::ZENKAKU_HANKAKU;
-
+#if QT_VERSION >= QT_VERSION_CHECK(5, 12, 0)
     // Dead keys (ui/events/keycodes/keyboard_code_conversion_xkb.cc)
     case Qt::Key_Dead_Grave:
         return ui::DomKey::DeadKeyFromCombiningCharacter(0x0300);
@@ -994,7 +994,7 @@ static ui::DomKey domKeyForQtKey(int qtKey)
         return ui::DomKey::DeadKeyFromCombiningCharacter(0x00A4);
     case Qt::Key_Dead_Greek:
         return ui::DomKey::DeadKeyFromCombiningCharacter(0x037E);
-
+#endif
     // General-Purpose Function Keys
     case Qt::Key_F1:
         return ui::DomKey::F1;
diff --git a/src/webengine/api/qquickwebengineprofile.cpp b/src/webengine/api/qquickwebengineprofile.cpp
index 57434e296f0ccfe7e78de257fd6f19831fd5bf64..edad7ec440d5983351a1dcef2db36a9319533f57 100644
--- a/src/webengine/api/qquickwebengineprofile.cpp
+++ b/src/webengine/api/qquickwebengineprofile.cpp
@@ -157,7 +157,10 @@ ASSERT_ENUMS_MATCH(QQuickWebEngineDownloadItem::MimeHtmlSaveFormat, QtWebEngineC
     \fn QQuickWebEngineProfile::presentNotification(QWebEngineNotification *notification)
 
     This signal is emitted whenever there is a newly created user notification.
-    The \a notification argument holds the notification instance to query data and interact with.
+    The \a notification argument holds the \l {QWebEngineNotification} instance
+    to query data and interact with.
+
+    \sa WebEngineProfile::presentNotification
 */
 
 QQuickWebEngineProfilePrivate::QQuickWebEngineProfilePrivate(ProfileAdapter *profileAdapter)
@@ -395,7 +398,8 @@ void QQuickWebEngineProfilePrivate::userScripts_clear(QQmlListProperty<QQuickWeb
     \since QtWebEngine 1.9
 
     This signal is emitted whenever there is a newly created user notification.
-    The \a notification argument holds the notification instance to query data and interact with.
+    The \a notification argument holds the \l {WebEngineNotification} instance
+    to query data and interact with.
 */
 
 /*!
diff --git a/src/webengine/api/qquickwebenginesettings.cpp b/src/webengine/api/qquickwebenginesettings.cpp
index 93a3668ed50f80361e45415831abe06d1011a26e..9a102a50478ae589656e03258b6626d5b6358848 100644
--- a/src/webengine/api/qquickwebenginesettings.cpp
+++ b/src/webengine/api/qquickwebenginesettings.cpp
@@ -250,7 +250,7 @@ bool QQuickWebEngineSettings::pluginsEnabled() const
 
     Tells the web engine whether fullscreen is supported in this application or not.
 
-    Enabled by default.
+    Disabled by default.
 */
 bool QQuickWebEngineSettings::fullScreenSupportEnabled() const
 {
diff --git a/src/webengine/api/qquickwebengineview.cpp b/src/webengine/api/qquickwebengineview.cpp
index 58d950cd96ea54378634c9d4840cf42e1d1fb546..8a1a3c5160fb0b05b1a6c2d4d13f5bd5bdd5826f 100644
--- a/src/webengine/api/qquickwebengineview.cpp
+++ b/src/webengine/api/qquickwebengineview.cpp
@@ -297,7 +297,7 @@ void QQuickWebEngineViewPrivate::allowCertificateError(const QSharedPointer<Cert
     // mark the object for gc by creating temporary jsvalue
     qmlEngine(q)->newQObject(quickController);
     Q_EMIT q->certificateError(quickController);
-    if (!quickController->deferred() && !quickController->answered())
+    if (!quickController->overridable() || (!quickController->deferred() && !quickController->answered()))
         quickController->rejectCertificate();
     else
         m_certificateErrorControllers.append(errorController);
@@ -1152,9 +1152,7 @@ void QQuickWebEngineViewPrivate::updateAdapter()
     adapter->setClient(this);
     if (wasInitialized) {
         if (!m_html.isEmpty())
-            adapter->setContent(m_html.toUtf8(), defaultMimeType, m_url);
-        else if (m_url.isValid())
-            adapter->load(m_url);
+            adapter->setContent(m_html.toUtf8(), defaultMimeType, activeUrl);
         else if (activeUrl.isValid())
             adapter->load(activeUrl);
         else
diff --git a/src/webengine/doc/src/qtwebengine-features.qdoc b/src/webengine/doc/src/qtwebengine-features.qdoc
index 08c1897401089844e3f6f8c6146d8065f9e57c97..00b9cb49611b5a8b55c132c95c5246f869850622 100644
--- a/src/webengine/doc/src/qtwebengine-features.qdoc
+++ b/src/webengine/doc/src/qtwebengine-features.qdoc
@@ -126,7 +126,9 @@
     so uniquely identifies the user and might violate privacy expectations.
 
     To activate support for client certificates, an application needs to listen to
-    the QWebEnginePage::selectClientCertificate signal and select one of the offered
+    the QWebEnginePage::selectClientCertificate or
+    \l{WebEnginePage::selectClientCertificate}{WebEnginePage.selectClientCertificate}
+    signals and select one of the offered
     certificates. For applications that can navigate to untrusted web sites, it is
     recommended to always give the user a choice before uniquely identifying them
     to a remote server.
diff --git a/src/webengine/doc/src/qtwebengine-platform-notes.qdoc b/src/webengine/doc/src/qtwebengine-platform-notes.qdoc
index 5b7d750ffbb428c0d91122894ad593d09dd8af6e..5d32fa6c76718ec425550417b1d7649e7f4cef71 100644
--- a/src/webengine/doc/src/qtwebengine-platform-notes.qdoc
+++ b/src/webengine/doc/src/qtwebengine-platform-notes.qdoc
@@ -73,6 +73,8 @@
 
     \list
         \li Visual Studio 2017 version 15.8 or later
+        \li Active Template Library (ATL), usually included in the Visual Studio
+            installation
         \li Windows 10 SDK
     \endlist
 
diff --git a/src/webengine/doc/src/webengineview_lgpl.qdoc b/src/webengine/doc/src/webengineview_lgpl.qdoc
index 8f03774c8b77d7ef506615577707f1c845471806..9abc8f37b59a8620f45acb934716b67479a2f60b 100644
--- a/src/webengine/doc/src/webengineview_lgpl.qdoc
+++ b/src/webengine/doc/src/webengineview_lgpl.qdoc
@@ -396,7 +396,7 @@
     runJavaScript("document.title", function(result) { console.log(result); });
     \endcode
 
-    Only "plain data" can be returned from JavaScript as the result value.
+    Only plain data can be returned from JavaScript as the result value.
     Supported data types include all of the JSON data types as well as, for
     example, \c{Date} and \c{ArrayBuffer}. Unsupported data types include, for
     example, \c{Function} and \c{Promise}.
@@ -407,7 +407,8 @@
     \warning Do not execute lengthy routines in the callback function, because it might block the
     rendering of the web content.
 
-    See WebEngineView::userScripts for an alternative API to inject scripts.
+    For more information about injecting scripts, see \l {Script Injection}.
+    For an alternative way to inject scripts, see WebEngineView::userScripts.
 */
 
 /*!
@@ -444,14 +445,13 @@
 
     To clear the search highlight, just pass an empty string.
 
-    The \a resultCallback must take a boolean parameter. It will be called with
-    a value of true if the \a subString was found; otherwise the callback value
-    will be false.
+    The \a resultCallback must take an integer parameter. It will be called with
+    the number of found occurrences of the \a subString.
 
     \code
-    findText("Qt", WebEngineView.FindCaseSensitively, function(success) {
-        if (success)
-            console.log("Qt was found!");
+    findText("Qt", WebEngineView.FindCaseSensitively, function(matchCount) {
+        if (matchCount > 0)
+            console.log("'Qt' tokens found:", matchCount);
     });
     \endcode
 
diff --git a/src/webengine/plugin/plugin.cpp b/src/webengine/plugin/plugin.cpp
index e47a46a95cb6b7dec2c85a4675b79c627f23595f..5fb48d867b95270736b00d53ca992673aa3823b4 100644
--- a/src/webengine/plugin/plugin.cpp
+++ b/src/webengine/plugin/plugin.cpp
@@ -164,10 +164,12 @@ public:
         qmlRegisterUncreatableType<QWebEngineRegisterProtocolHandlerRequest>(uri, 1, 7, "RegisterProtocolHandlerRequest",
                                                                              msgUncreatableType("RegisterProtocolHandlerRequest"));
         qmlRegisterUncreatableType<QQuickWebEngineAction>(uri, 1, 8, "WebEngineAction", msgUncreatableType("WebEngineAction"));
+#if QT_VERSION >= QT_VERSION_CHECK(5, 12, 0)
         qmlRegisterUncreatableType<QQuickWebEngineClientCertificateSelection>(uri, 1, 9, "WebEngineClientCertificateSelection",
                                                                               msgUncreatableType("WebEngineClientCertificateSelection"));
         qmlRegisterUncreatableType<QQuickWebEngineClientCertificateOption>(uri, 1, 9, "WebEngineClientCertificateOption",
                                                                            msgUncreatableType("WebEngineClientCertificateOption"));
+#endif
         qmlRegisterUncreatableType<QWebEngineNotification>(uri, 1, 9, "WebEngineNotification", msgUncreatableType("WebEngineNotification"));
         qmlRegisterUncreatableType<QQuickWebEngineTooltipRequest>(uri, 1, 10, "TooltipRequest",
                                                                   msgUncreatableType("TooltipRequest"));
diff --git a/src/webengine/render_widget_host_view_qt_delegate_quick.cpp b/src/webengine/render_widget_host_view_qt_delegate_quick.cpp
index 3a103b9aa01f4392f83ecb1dc1d8230951c15391..ac32671aad6bdfbbf22b0e02b45a570fcaf20046 100644
--- a/src/webengine/render_widget_host_view_qt_delegate_quick.cpp
+++ b/src/webengine/render_widget_host_view_qt_delegate_quick.cpp
@@ -106,7 +106,11 @@ QRectF RenderWidgetHostViewQtDelegateQuick::viewGeometry() const
     const QPointF p2 = mapToGlobal(mapFromScene(QPointF(width(), height())));
     QRectF geometry = QRectF(p1, p2).normalized();
     // But keep the size untransformed to behave like other QQuickItems.
+#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
     geometry.setSize(size());
+#else
+    geometry.setSize(QSizeF(width(), height()));
+#endif
     return geometry;
 }
 
diff --git a/src/webengine/render_widget_host_view_qt_delegate_quickwindow.cpp b/src/webengine/render_widget_host_view_qt_delegate_quickwindow.cpp
index 23b9e02c263fc74846a5f60aec7f6ae7d570626d..d3ebdbf273bb00d9d3af379dd276303dc6db210b 100644
--- a/src/webengine/render_widget_host_view_qt_delegate_quickwindow.cpp
+++ b/src/webengine/render_widget_host_view_qt_delegate_quickwindow.cpp
@@ -48,7 +48,7 @@ RenderWidgetHostViewQtDelegateQuickWindow::RenderWidgetHostViewQtDelegateQuickWi
     : m_realDelegate(realDelegate)
     , m_virtualParent(nullptr)
 {
-    setFlags(Qt::ToolTip | Qt::FramelessWindowHint | Qt::WindowDoesNotAcceptFocus);
+    setFlags(Qt::Tool | Qt::FramelessWindowHint | Qt::WindowDoesNotAcceptFocus);
 }
 
 RenderWidgetHostViewQtDelegateQuickWindow::~RenderWidgetHostViewQtDelegateQuickWindow()
diff --git a/src/webengine/ui/ToolTip.qml b/src/webengine/ui/ToolTip.qml
index 96033e8f1beaea08d023304c5413e3a652239014..2bfe9eaf5b66c547c256f1947010404e349889f1 100644
--- a/src/webengine/ui/ToolTip.qml
+++ b/src/webengine/ui/ToolTip.qml
@@ -47,8 +47,9 @@ Item {
     visible: false
 
     property alias text: toolTip.text
-    property int delayTimerInterval: 1000
-    property int hideTimerInterval: 1500
+    property int delayTimerInterval: 500
+    property int hideTimerInterval: 10000
+    property int toolTipMaxWidth: 400
 
     Timer {
         id: delayTimer
@@ -77,7 +78,8 @@ Item {
        Text {
             id: toolTip
             anchors {fill: parent; margins: 5}
-            wrapMode: Text.WrapAnywhere
+            wrapMode: Text.Wrap
+            width: Math.min(toolTipMaxWidth, (toolTip.text.length +1) * 8)
         }
     }
 
diff --git a/src/webenginewidgets/api/qwebenginepage.cpp b/src/webenginewidgets/api/qwebenginepage.cpp
index b22d4791688793fe80fb274eae316b0c6c9b19fd..e4f4c4bc831dfe2c4478f69c4f2d789deb4582c6 100644
--- a/src/webenginewidgets/api/qwebenginepage.cpp
+++ b/src/webenginewidgets/api/qwebenginepage.cpp
@@ -178,7 +178,6 @@ QWebEnginePagePrivate::QWebEnginePagePrivate(QWebEngineProfile *_profile)
     wasShownTimer.setSingleShot(true);
     QObject::connect(&wasShownTimer, &QTimer::timeout, [this](){
         ensureInitialized();
-        adapter->setVisible(true);
     });
 
     profile->d_ptr->addWebContentsAdapterClient(this);
@@ -442,7 +441,7 @@ void QWebEnginePagePrivate::didPrintPage(quint64 requestId, QSharedPointer<QByte
     printerThread->start();
 
     PrinterWorker *printerWorker = new PrinterWorker(result, currentPrinter);
-    QObject::connect(printerWorker, &PrinterWorker::resultReady, q, [=](bool success) {
+    QObject::connect(printerWorker, &PrinterWorker::resultReady, q, [requestId, this](bool success) {
         currentPrinter = nullptr;
         m_callbacks.invoke(requestId, success);
     });
@@ -1720,8 +1719,8 @@ void QWebEnginePagePrivate::allowCertificateError(const QSharedPointer<Certifica
     accepted = q->certificateError(error);
     if (error.deferred() && !error.answered())
         m_certificateErrorControllers.append(controller);
-    else if (!error.answered() && error.isOverridable())
-        controller->accept(accepted);
+    else if (!error.answered())
+        controller->accept(error.isOverridable() && accepted);
 }
 
 void QWebEnginePagePrivate::selectClientCert(const QSharedPointer<ClientCertSelectController> &controller)
@@ -1817,7 +1816,7 @@ void QWebEnginePagePrivate::setToolTip(const QString &toolTipText)
     }
 
     // Update tooltip if text was changed.
-    QString wrappedTip = QLatin1String("<p style=\"white-space:pre\">")
+    QString wrappedTip = QLatin1String("<p style=\"white-space:pre-wrap\">")
             % toolTipText.toHtmlEscaped().left(MaxTooltipLength)
             % QLatin1String("</p>");
     if (view->toolTip() != wrappedTip)
@@ -2178,7 +2177,7 @@ void QWebEnginePage::runJavaScript(const QString& scriptSource, quint32 worldId,
     In addition, a page might also execute scripts
     added through QWebEngineProfile::scripts().
 
-    \sa QWebEngineScriptCollection, QWebEngineScript
+    \sa QWebEngineScriptCollection, QWebEngineScript, {Script Injection}
 */
 
 QWebEngineScriptCollection &QWebEnginePage::scripts()
diff --git a/src/webenginewidgets/api/qwebengineprofile.cpp b/src/webenginewidgets/api/qwebengineprofile.cpp
index 4a77eb8cf30c683d3c6ba74d39fc5a14be7051f7..09f5ce2fd0406b6262fd2f6e2695c1e12a91e15f 100644
--- a/src/webenginewidgets/api/qwebengineprofile.cpp
+++ b/src/webenginewidgets/api/qwebengineprofile.cpp
@@ -661,7 +661,8 @@ bool QWebEngineProfile::visitedLinksContainsUrl(const QUrl &url) const
     Returns the collection of scripts that are injected into all pages that share
     this profile.
 
-    \sa QWebEngineScriptCollection, QWebEngineScript, QWebEnginePage::scripts()
+    \sa QWebEngineScriptCollection, QWebEngineScript, QWebEnginePage::scripts(),
+        {Script Injection}
 */
 QWebEngineScriptCollection *QWebEngineProfile::scripts() const
 {
diff --git a/src/webenginewidgets/api/qwebenginescript.cpp b/src/webenginewidgets/api/qwebenginescript.cpp
index d1e996b3ac31e0960517a7cb8a026e468096e328..af6b9aa8d3363287fc613c91df2d21322610f531 100644
--- a/src/webenginewidgets/api/qwebenginescript.cpp
+++ b/src/webenginewidgets/api/qwebenginescript.cpp
@@ -67,6 +67,8 @@ using QtWebEngineCore::UserScript;
     Use QWebEnginePage::scripts() and QWebEngineProfile::scripts() to access
     the collection of scripts associated with a single page or a
     number of pages sharing the same profile.
+
+    \sa {Script Injection}
 */
 /*!
     \enum QWebEngineScript::InjectionPoint
diff --git a/src/webenginewidgets/api/qwebenginescriptcollection.cpp b/src/webenginewidgets/api/qwebenginescriptcollection.cpp
index 5ef0ffd44cd3d9419740d4ee142101149d9dac9e..8cbeeb804cdff389fbda963a73d5ea5587fbb256 100644
--- a/src/webenginewidgets/api/qwebenginescriptcollection.cpp
+++ b/src/webenginewidgets/api/qwebenginescriptcollection.cpp
@@ -55,6 +55,8 @@ using QtWebEngineCore::UserScript;
     Use QWebEnginePage::scripts() and QWebEngineProfile::scripts() to access
     the collection of scripts associated with a single page or a
     number of pages sharing the same profile.
+
+    \sa {Script Injection}
 */
 
 /*!
diff --git a/src/webenginewidgets/api/qwebengineview.cpp b/src/webenginewidgets/api/qwebengineview.cpp
index ac979e766aabd33a6ff9acba71b5e613e1abce0a..de81448a95c618d10e95bb2f3cf7089daed12fdc 100644
--- a/src/webenginewidgets/api/qwebengineview.cpp
+++ b/src/webenginewidgets/api/qwebengineview.cpp
@@ -61,6 +61,7 @@ void QWebEngineViewPrivate::pageChanged(QWebEnginePage *oldPage, QWebEnginePage
     Q_Q(QWebEngineView);
 
     if (oldPage) {
+        oldPage->setVisible(false);
         oldPage->disconnect(q);
     }
 
@@ -74,6 +75,7 @@ void QWebEngineViewPrivate::pageChanged(QWebEnginePage *oldPage, QWebEnginePage
         QObject::connect(newPage, &QWebEnginePage::loadFinished, q, &QWebEngineView::loadFinished);
         QObject::connect(newPage, &QWebEnginePage::selectionChanged, q, &QWebEngineView::selectionChanged);
         QObject::connect(newPage, &QWebEnginePage::renderProcessTerminated, q, &QWebEngineView::renderProcessTerminated);
+        newPage->setVisible(q->isVisible());
     }
 
     auto oldUrl = oldPage ? oldPage->url() : QUrl();
diff --git a/src/webenginewidgets/doc/src/qwebenginepage_lgpl.qdoc b/src/webenginewidgets/doc/src/qwebenginepage_lgpl.qdoc
index 699d7f18114189c9dafbac5b3ae4af660d9a0b2f..7701b9b3dc13120ba5bd8d143dd5b1e6f8d1178d 100644
--- a/src/webenginewidgets/doc/src/qwebenginepage_lgpl.qdoc
+++ b/src/webenginewidgets/doc/src/qwebenginepage_lgpl.qdoc
@@ -767,10 +767,15 @@
     \fn void QWebEnginePage::runJavaScript(const QString &scriptSource, const QWebEngineCallback<const QVariant &> &resultCallback)
     \since 5.7
 
-    Runs the JavaScript code contained in \a scriptSource in the world specified by \a worldId.
-    The world ID values are the same as provided by QWebEngineScript::ScriptWorldId, and between \c 0
-    and \c 256. Using the \e runJavaScript() versions without the world ID is the same as running the
-    script in the \c MainWorld.
+    Runs the JavaScript code contained in \a scriptSource without checking
+    whether the DOM of the page has been constructed. If you need more
+    control over how the script is run, consider using \l scripts() instead.
+
+    To avoid conflicts with other scripts executed on the page, the world in
+    which the script is run is specified by \a worldId. The world ID values are
+    the same as provided by QWebEngineScript::ScriptWorldId, and between \c 0
+    and \c 256. If you leave out the \c world ID, the script is run in the
+    \c MainWorld.
 
     When the script has been executed, \a resultCallback is called with the result of the last
     executed statement. \c resultCallback can be any of a function pointer, a functor or a lambda,
@@ -780,7 +785,7 @@
     page.runJavaScript("document.title", [](const QVariant &v) { qDebug() << v.toString(); });
     \endcode
 
-    Only "plain data" can be returned from JavaScript as the result value.
+    Only plain data can be returned from JavaScript as the result value.
     Supported data types include all of the JSON data types as well as, for
     example, \c{Date} and \c{ArrayBuffer}. Unsupported data types include, for
     example, \c{Function} and \c{Promise}.
@@ -792,9 +797,7 @@
     during page destruction. When QWebEnginePage is deleted, the callback is triggered with an invalid
     value and it is not safe to use the corresponding QWebEnginePage or QWebEngineView instance inside it.
 
-    See scripts() for an alternative API to inject scripts.
-
-    \sa QWebEngineScript::ScriptWorldId
+    \sa scripts(), QWebEngineScript::ScriptWorldId, {Script Injection}
 */
 
 /*!
diff --git a/tests/auto/quick/qmltests/data/tst_filePicker.qml b/tests/auto/quick/qmltests/data/tst_filePicker.qml
index 2f813b96680c0007401f55ca4d2800f4c0870f18..fad81273c2d15b93e74d75e281b0e0ca4fc9381f 100644
--- a/tests/auto/quick/qmltests/data/tst_filePicker.qml
+++ b/tests/auto/quick/qmltests/data/tst_filePicker.qml
@@ -36,6 +36,12 @@ TestWebEngineView {
     width: 400
     height: 300
 
+    function driveLetter() {
+        if (Qt.platform.os !== "windows")
+            return "";
+        return "C:/";
+    }
+
     SignalSpy {
         id: titleSpy
         target: webEngineView
@@ -72,27 +78,25 @@ TestWebEngineView {
 
         function test_acceptSingleFileSelection_data() {
             return [
-                   { tag: "/test.txt)", input: "/test.txt", passDefaultDialog: false, passCustomDialog: true },
-                   { tag: "/tést.txt", input: "/tést.txt", passDefaultDialog: false, passCustomDialog: true },
-                   { tag: "file:///test.txt", input: "file:///test.txt", passDefaultDialog: true, passCustomDialog: false },
-                   { tag: "file:///tést.txt", input: "file:///tést.txt", passDefaultDialog: true, passCustomDialog: false  },
-                   { tag: "file:///t%C3%A9st.txt", input: "file:///t%C3%A9st.txt", passDefaultDialog: true, passCustomDialog: false },
-                   { tag: "file://test.txt", input: "file://test.txt", passDefaultDialog: false, passCustomDialog: false },
-                   { tag: "file:/test.txt", input: "file:/test.txt", passDefaultDialog: true, passCustomDialog: false },
-                   { tag: "file:test//test.txt", input: "file:test//test.txt", passDefaultDialog: false, passCustomDialog: false },
-                   { tag: "http://test.txt", input: "http://test.txt", passDefaultDialog: false, passCustomDialog: false },
-                   { tag: "qrc:/test.txt", input: "qrc:/test.txt", passDefaultDialog: false, passCustomDialog: false },
+                   { tag: driveLetter() + "/test.txt", input: driveLetter() + "/test.txt", expected: "test.txt" },
+                   { tag: driveLetter() + "test.txt", input: driveLetter() + "test.txt", expected: "Failed to Upload" },
+                   { tag: driveLetter() + "/tést.txt", input: driveLetter() + "/tést.txt", expected: "tést.txt" },
+                   { tag: driveLetter() + "/t%65st.txt", input: driveLetter() + "/t%65st.txt", expected: "t%65st.txt" },
+                   { tag: "file:///" + driveLetter() + "test.txt", input: "file:///" + driveLetter() + "test.txt", expected: "test.txt" },
+                   { tag: "file:///" + driveLetter() + "tést.txt", input: "file:///" + driveLetter() + "tést.txt", expected: "tést.txt" },
+                   { tag: "file:///" + driveLetter() + "t%65st.txt", input: "file:///" + driveLetter() + "t%65st.txt", expected: "test.txt" },
+                   { tag: "file://" + driveLetter() + "test.txt", input: "file://" + driveLetter() + "test.txt", expected: "test.txt" },
+                   { tag: "file:/" + driveLetter() + "test.txt", input: "file:/" + driveLetter() + "test.txt", expected: "test.txt"},
+                   { tag: "file:test//test.txt", input: "file:test//test.txt", expected: "Failed to Upload" },
+                   { tag: "http://test.txt", input: "http://test.txt", expected: "Failed to Upload" },
+                   { tag: "qrc:/test.txt", input: "qrc:/test.txt", expected: "Failed to Upload" },
             ];
         }
 
         function test_acceptSingleFileSelection(row) {
             var expectedFileName;
 
-            // Default dialog (expects URL).
-            expectedFileName = "Failed to Upload";
-            if (row.passDefaultDialog)
-                expectedFileName = row.input.slice(row.input.lastIndexOf('/') + 1);
-
+            // Default dialog
             webEngineView.url = Qt.resolvedUrl("singlefileupload.html");
             verify(webEngineView.waitForLoadSucceeded());
 
@@ -101,16 +105,12 @@ TestWebEngineView {
 
             keyClick(Qt.Key_Enter); // Focus is on the button. Open FileDialog.
             tryCompare(FilePickerParams, "filePickerOpened", true);
-            tryCompare(webEngineView, "title", decodeURIComponent(expectedFileName));
+            tryCompare(webEngineView, "title", row.expected);
 
 
-            // Custom dialog (expects absolute path).
+            // Custom dialog
             var finished = false;
 
-            expectedFileName = "Failed to Upload";
-            if (row.passCustomDialog)
-                expectedFileName = row.input.slice(row.input.lastIndexOf('/') + 1);
-
             function acceptedFileHandler(request) {
                 request.accepted = true;
                 request.dialogAccept(row.input);
@@ -123,7 +123,7 @@ TestWebEngineView {
 
             keyClick(Qt.Key_Enter); // Focus is on the button. Open FileDialog.
             tryVerify(function() { return finished; });
-            tryCompare(webEngineView, "title", expectedFileName);
+            tryCompare(webEngineView, "title", row.expected);
             webEngineView.fileDialogRequested.disconnect(acceptedFileHandler);
         }
 
@@ -165,14 +165,14 @@ TestWebEngineView {
 
         function test_acceptMultipleFilesWithCustomDialog_data() {
             return [
-                   { tag: "path", input: ["/test1.txt", "/test2.txt"], expectedValueForDefaultDialog: "Failed to Upload", expectedValueForCustomDialog: "test1.txt,test2.txt" },
-                   { tag: "file", input: ["file:///test1.txt", "file:///test2.txt"], expectedValueForDefaultDialog: "test1.txt,test2.txt", expectedValueForCustomDialog: "Failed to Upload" },
-                   { tag: "mixed", input: ["file:///test1.txt", "/test2.txt"], expectedValueForDefaultDialog: "test1.txt", expectedValueForCustomDialog: "test2.txt" },
+                   { tag: "path", input: [driveLetter() + "/test1.txt", driveLetter() + "/test2.txt"], expectedValue: "test1.txt,test2.txt" },
+                   { tag: "file", input: ["file:///" + driveLetter() + "test1.txt", "file:/" + driveLetter() + "test2.txt"], expectedValue: "test1.txt,test2.txt" },
+                   { tag: "mixed", input: ["file:///" + driveLetter() + "test1.txt", driveLetter() + "/test2.txt"], expectedValue: "test1.txt,test2.txt" },
             ];
         }
 
         function test_acceptMultipleFilesWithCustomDialog(row) {
-            // Default dialog (expects URL).
+            // Default dialog
             webEngineView.url = Qt.resolvedUrl("multifileupload.html");
             verify(webEngineView.waitForLoadSucceeded());
 
@@ -181,10 +181,10 @@ TestWebEngineView {
 
             keyClick(Qt.Key_Enter); // Focus is on the button. Open FileDialog.
             tryCompare(FilePickerParams, "filePickerOpened", true);
-            tryCompare(webEngineView, "title", row.expectedValueForDefaultDialog);
+            tryCompare(webEngineView, "title", row.expectedValue);
 
 
-            // Custom dialog (expects absolute path).
+            // Custom dialog
             var finished = false;
 
             function acceptedFileHandler(request) {
@@ -199,7 +199,65 @@ TestWebEngineView {
 
             keyClick(Qt.Key_Enter); // Focus is on the button. Open FileDialog.
             tryVerify(function() { return finished; });
-            tryCompare(webEngineView, "title", row.expectedValueForCustomDialog);
+            tryCompare(webEngineView, "title", row.expectedValue);
+            webEngineView.fileDialogRequested.disconnect(acceptedFileHandler);
+        }
+
+        function test_acceptFileOnWindows_data() {
+            return [
+                   { tag: "C:test.txt", input: "C:test.txt", expected: "Failed to Upload"},
+                   { tag: "C:test:txt", input: "C:test:txt", expected: "Failed to Upload"},
+                   { tag: "C:/test.txt", input: "C:/test.txt", expected: "test.txt"},
+                   { tag: "C:\\test.txt", input: "C:\\test.txt", expected: "test.txt"},
+                   { tag: "C:\\Documents and Settings\\test\\test.txt", input: "C:\\Documents and Settings\\test\\test.txt", expected: "test.txt"},
+                   { tag: "\\\\applib\\products\\a%2Db\\ abc%5F9\\t.est\\test.txt", input: "file://applib/products/a%2Db/ abc%5F9/4148.920a/media/test.txt", expected: "test.txt"},
+                   { tag: "file://applib/products/a%2Db/ abc%5F9/t.est/test.txt", input: "file://applib/products/a%2Db/ abc%5F9/4148.920a/media/test.txt", expected: "test.txt"},
+                   { tag: "file://applib/products/a-b/abc_1/t.est/test.txt", input: "file://applib/products/a-b/abc_1/t.est/test.txt", expected: "test.txt"},
+                   { tag: "file:\\\\applib\\products\\a-b\\abc_1\\t:est\\test.txt", input: "file:\\\\applib\\products\\a-b\\abc_1\\t:est\\test.txt", expected: "test.txt"},
+                   { tag: "file:C:/test.txt", input: "file:C:/test.txt", expected: "Failed to Upload"},
+                   { tag: "file:/C:/test.txt", input: "file:/C:/test.txt", expected: "Failed to Upload"},
+                   { tag: "file://C:/test.txt", input: "file://C:/test.txt", expected: "Failed to Upload"},
+                   { tag: "file:///C:test.txt", input: "file:///C:test.txt", expected: "Failed to Upload"},
+                   { tag: "file:///C:/test.txt", input: "file:///C:/test.txt", expected: "test.txt"},
+                   { tag: "file:///C:\\test.txt", input: "file:///C:\\test.txt", expected: "test.txt"},
+                   { tag: "file:\\//C:/test.txt", input: "file:\\//C:/test.txt", expected: "test.txt"},
+                   { tag: "file:\\\\/C:\\test.txt", input: "file:\\\\/C:\\test.txt", expected: "test.txt"},
+                   { tag: "\\\\?\\C:/test.txt", input: "\\\\?\\C:/test.txt", expected: "Failed to Upload"},
+            ];
+        }
+
+        function test_acceptFileOnWindows(row) {
+            if (Qt.platform.os !== "windows")
+                skip("Windows-only test");
+
+            // Default dialog
+            webEngineView.url = Qt.resolvedUrl("singlefileupload.html");
+            verify(webEngineView.waitForLoadSucceeded());
+
+            FilePickerParams.selectFiles = true;
+            FilePickerParams.selectedFilesUrl.push(row.input);
+
+            keyClick(Qt.Key_Enter); // Focus is on the button. Open FileDialog.
+            tryCompare(FilePickerParams, "filePickerOpened", true);
+            tryCompare(webEngineView, "title", row.expected);
+
+
+            // Custom dialog
+            var finished = false;
+
+            function acceptedFileHandler(request) {
+                request.accepted = true;
+                request.dialogAccept(row.input);
+                finished = true;
+            }
+
+            webEngineView.fileDialogRequested.connect(acceptedFileHandler);
+            webEngineView.url = Qt.resolvedUrl("singlefileupload.html");
+            verify(webEngineView.waitForLoadSucceeded());
+
+            keyClick(Qt.Key_Enter); // Focus is on the button. Open FileDialog.
+            tryVerify(function() { return finished; });
+            tryCompare(webEngineView, "title", row.expected);
             webEngineView.fileDialogRequested.disconnect(acceptedFileHandler);
         }
     }
diff --git a/tests/auto/quick/qquickwebengineview/tst_qquickwebengineview.cpp b/tests/auto/quick/qquickwebengineview/tst_qquickwebengineview.cpp
index 74c04635fd90c9455025c2c9ad3edf405f3881e0..5572515a114f334d1eaf23c345155e36ca8583e2 100644
--- a/tests/auto/quick/qquickwebengineview/tst_qquickwebengineview.cpp
+++ b/tests/auto/quick/qquickwebengineview/tst_qquickwebengineview.cpp
@@ -91,6 +91,7 @@ private Q_SLOTS:
     void userScripts();
     void javascriptClipboard_data();
     void javascriptClipboard();
+    void setProfile();
 
 private:
     inline QQuickWebEngineView *newWebEngineView();
@@ -1148,5 +1149,18 @@ void tst_QQuickWebEngineView::javascriptClipboard()
     QTRY_COMPARE(evaluateJavaScriptSync(view, "accessPrompt").toBool(), false);
 }
 
+void tst_QQuickWebEngineView::setProfile() {
+    QSignalSpy loadSpy(webEngineView(), SIGNAL(loadingChanged(QQuickWebEngineLoadRequest*)));
+    webEngineView()->setUrl(urlFromTestPath("html/basic_page.html"));
+    QVERIFY(waitForLoadSucceeded(webEngineView()));
+    QCOMPARE(loadSpy.size(), 2);
+    webEngineView()->setUrl(urlFromTestPath("html/basic_page2.html"));
+    QVERIFY(waitForLoadSucceeded(webEngineView()));
+    QCOMPARE(loadSpy.size(), 4);
+    QQuickWebEngineProfile *profile = new QQuickWebEngineProfile();
+    webEngineView()->setProfile(profile);
+    QTRY_COMPARE(webEngineView()->url() ,urlFromTestPath("html/basic_page2.html"));
+}
+
 QTEST_MAIN(tst_QQuickWebEngineView)
 #include "tst_qquickwebengineview.moc"
diff --git a/tests/auto/widgets/proxypac/tst_proxypac.cpp b/tests/auto/widgets/proxypac/tst_proxypac.cpp
index f9340341b39786b56926671bca341f014a290bce..934e23fdea45d10969165cb55640147f38d17411 100644
--- a/tests/auto/widgets/proxypac/tst_proxypac.cpp
+++ b/tests/auto/widgets/proxypac/tst_proxypac.cpp
@@ -46,6 +46,10 @@ private slots:
 
 void tst_ProxyPac::proxypac()
 {
+    const QString fromEnv = QString::fromLocal8Bit(qgetenv("QTWEBENGINE_CHROMIUM_FLAGS"));
+    if (!fromEnv.contains("--proxy-pac-url"))
+        qFatal("--proxy-pac-url argument is not passed.");
+
     ProxyServer proxyServer1;
     proxyServer1.setPort(5551);
     proxyServer1.run();
diff --git a/tests/auto/widgets/qwebenginepage/BLACKLIST b/tests/auto/widgets/qwebenginepage/BLACKLIST
index e6fad8b2026cb9d5fe53ca124f58e18bcf7e49f4..7857ee8181f94d9872cae767d2bfa496c7fc491f 100644
--- a/tests/auto/widgets/qwebenginepage/BLACKLIST
+++ b/tests/auto/widgets/qwebenginepage/BLACKLIST
@@ -4,9 +4,5 @@ osx
 [mouseMovementProperties]
 windows
 
-[runJavaScriptFromSlot]
-osx
-linux
-
 [fullScreenRequested]
 windows
diff --git a/tests/auto/widgets/qwebenginepage/tst_qwebenginepage.cpp b/tests/auto/widgets/qwebenginepage/tst_qwebenginepage.cpp
index dbb15ba1026fceb016073f589b187bd6cb592f02..5edd778e222a1631b25c106d12712f839fbc9c74 100644
--- a/tests/auto/widgets/qwebenginepage/tst_qwebenginepage.cpp
+++ b/tests/auto/widgets/qwebenginepage/tst_qwebenginepage.cpp
@@ -1824,24 +1824,22 @@ void tst_QWebEnginePage::runJavaScriptFromSlot()
 {
     QWebEngineProfile profile;
     QWebEnginePage page(&profile);
-    page.settings()->setAttribute(QWebEngineSettings::FocusOnNavigationEnabled, true);
 
     QSignalSpy loadFinishedSpy(&page, &QWebEnginePage::loadFinished);
     page.setHtml("<html><body>"
                  "  <input type='text' id='input1' value='QtWebEngine' size='50' />"
                  "</body></html>");
     QTRY_COMPARE(loadFinishedSpy.count(), 1);
-    // Workaround for QTBUG-74718
-    QTRY_VERIFY(page.action(QWebEnginePage::SelectAll)->isEnabled());
 
-    QVariant result(-1);
+    bool done = false;
     connect(&page, &QWebEnginePage::selectionChanged, [&]() {
-        result = evaluateJavaScriptSync(&page, QStringLiteral("2+2"));
+        QTRY_COMPARE(evaluateJavaScriptSync(&page, QStringLiteral("2+2")), QVariant(4));
+        done = true;
     });
     evaluateJavaScriptSync(&page, QStringLiteral("const input = document.getElementById('input1');"
                                                  "input.focus();"
                                                  "input.select();"));
-    QTRY_COMPARE(result, QVariant(4));
+    QTRY_VERIFY(done);
 }
 
 void tst_QWebEnginePage::fullScreenRequested()
diff --git a/tests/auto/widgets/qwebengineview/tst_qwebengineview.cpp b/tests/auto/widgets/qwebengineview/tst_qwebengineview.cpp
index 827ac2757ac2829c7947b99228d07d6218491b27..71c4aa9b5d313cc576ab94c6c3c11ba4f64d4c17 100644
--- a/tests/auto/widgets/qwebengineview/tst_qwebengineview.cpp
+++ b/tests/auto/widgets/qwebengineview/tst_qwebengineview.cpp
@@ -192,6 +192,8 @@ private Q_SLOTS:
     void webUIURLs_data();
     void webUIURLs();
     void visibilityState();
+    void visibilityState2();
+    void visibilityState3();
     void jsKeyboardEvent();
     void deletePage();
     void closeOpenerTab();
@@ -3140,6 +3142,38 @@ void tst_QWebEngineView::visibilityState()
     QCOMPARE(evaluateJavaScriptSync(view.page(), "document.visibilityState").toString(), QStringLiteral("visible"));
 }
 
+void tst_QWebEngineView::visibilityState2()
+{
+    QWebEngineView view;
+    QSignalSpy spy(&view, &QWebEngineView::loadFinished);
+    view.show();
+    view.load(QStringLiteral("about:blank"));
+    view.hide();
+    QVERIFY(spy.count() || spy.wait());
+    QVERIFY(spy.takeFirst().takeFirst().toBool());
+    QCOMPARE(evaluateJavaScriptSync(view.page(), "document.visibilityState").toString(), QStringLiteral("hidden"));
+}
+
+void tst_QWebEngineView::visibilityState3()
+{
+    QWebEnginePage page1;
+    QWebEnginePage page2;
+    QSignalSpy spy1(&page1, &QWebEnginePage::loadFinished);
+    QSignalSpy spy2(&page2, &QWebEnginePage::loadFinished);
+    page1.load(QStringLiteral("about:blank"));
+    page2.load(QStringLiteral("about:blank"));
+    QVERIFY(spy1.count() || spy1.wait());
+    QVERIFY(spy2.count() || spy2.wait());
+    QWebEngineView view;
+    view.setPage(&page1);
+    view.show();
+    QCOMPARE(evaluateJavaScriptSync(&page1, "document.visibilityState").toString(), QStringLiteral("visible"));
+    QCOMPARE(evaluateJavaScriptSync(&page2, "document.visibilityState").toString(), QStringLiteral("hidden"));
+    view.setPage(&page2);
+    QCOMPARE(evaluateJavaScriptSync(&page1, "document.visibilityState").toString(), QStringLiteral("hidden"));
+    QCOMPARE(evaluateJavaScriptSync(&page2, "document.visibilityState").toString(), QStringLiteral("visible"));
+}
+
 void tst_QWebEngineView::jsKeyboardEvent()
 {
     QWebEngineView view;