Created attachment 76368 [details]
Proposed patch

As opposed to the platforms/android/libandroid-9.so plugin, libandroidGL-9.so does not have an implementation for QPlatformScreen::topLevelAt. Unfortunately, the default implementation does not store a Z ordered stack of all widgets and so it might not return the right one.

Procedure:
1. Create a Qt app for Android 4.0 that uses OpenGL (libQtOpenGL.so and libandroidGL-9.so are loaded).
2. Add lots of widgets or dialogs on top of each other.
3. Raise widgets to change the Z ordering randomly.
4. Click on the top level widget.

Outcome:
- The click event might be sent to the wrong widget.

I will attach a patch.