diff --git a/src/core/render_widget_host_view_qt.cpp b/src/core/render_widget_host_view_qt.cpp
index 96cddfb4b447d7624374663fbf63bd915b534c51..332be89f848418720e599b8e5462e1e9c59da88f 100644
--- a/src/core/render_widget_host_view_qt.cpp
+++ b/src/core/render_widget_host_view_qt.cpp
@@ -1149,11 +1149,7 @@ void RenderWidgetHostViewQt::handleInputMethodEvent(QInputMethodEvent *ev)
             if (format.underlineStyle() != QTextCharFormat::NoUnderline)
                 underlineColor = format.underlineColor();
 
-            QColor backgroundColor(0, 0, 0, 0);
-            if (format.background().style() != Qt::NoBrush)
-                backgroundColor = format.background().color();
-
-            underlines.push_back(blink::WebCompositionUnderline(start, end, toSk(underlineColor), /*thick*/ false, toSk(backgroundColor)));
+            underlines.push_back(blink::WebCompositionUnderline(start, end, toSk(underlineColor), /*thick*/ false, SK_ColorTRANSPARENT));
             break;
         }
         case QInputMethodEvent::Cursor:
diff --git a/tests/auto/widgets/qwebengineview/tst_qwebengineview.cpp b/tests/auto/widgets/qwebengineview/tst_qwebengineview.cpp
index 75795c17051866e6a7f486d29870003074e23bda..78190622ccd70904757b0f7094af18fd5d9a8ef8 100644
--- a/tests/auto/widgets/qwebengineview/tst_qwebengineview.cpp
+++ b/tests/auto/widgets/qwebengineview/tst_qwebengineview.cpp
@@ -1012,8 +1012,14 @@ void tst_QWebEngineView::inputMethodsTextFormat()
     QTextCharFormat format;
     format.setUnderlineStyle(static_cast<QTextCharFormat::UnderlineStyle>(underlineStyle));
     format.setUnderlineColor(underlineColor);
+
+    // Setting background color is disabled for Qt WebEngine because some IME manager
+    // sets background color to black and there is no API for setting the foreground color.
+    // This may result black text on black background. However, we still test it to ensure
+    // changing background color doesn't cause any crash.
     if (backgroundColor.isValid())
         format.setBackground(QBrush(backgroundColor));
+
     attrs.append(QInputMethodEvent::Attribute(QInputMethodEvent::TextFormat, start, length, format));
 
     QInputMethodEvent im(string, attrs);