Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-121181 Main window blinks when adding QWebEngineView into a layout
  3. QTBUG-136743

Main window blinks when adding QWebEngineView into a layout

XMLWordPrintable

      (COPY OF THE PARENT TASK, there is no access to the original author account, but the issue was not fixed)

      This is a regression since Qt 6.3.2. The issue is reproducible at least on Qt 6.9.0/6.8.1/6.6.3 on Windows Server 2022/Ubuntu 22

      If I create main window initially (with a raster surface by default) and later QWebEngineView is added into any layout, the main window is hidden for a short period of time. This happens only once: if I create the first QWebEngineView. The main window is not hidden anymore if other instances of QWebEngineView are created.

      After some investigation I found that it happens when a widget with OpenGL surface is reparented into a main window with a raster surface. In this case the surface type changes and resources of the main window are destroyed and recreated.

      The sample code is attached: webengine-bug.cpp

      Additionally, the issue was reproduced using Python code (for easier testing); a README.md file is included in the archive:

      QTBUG-121181.zip

        1. webengine-bug.cpp
          4 kB
        2. QTBUG-121181.zip
          10 kB
        3. QTBUG_136743.zip
          2 kB
        4. 6.9.0_Windows11_use_native_window.mkv
          7.62 MB
        No reviews matched the request. Check your Options in the drop-down menu of this sections header.

            qt_webengine_team Qt WebEngine Team
            mpopov Mikhail Popov
            Votes:
            3 Vote for this issue
            Watchers:
            13 Start watching this issue

              Created:
              Updated:

                There are no open Gerrit changes