QGraphicsEffect with QOpenGLWidget issue

[MattGuerrette]

I've noticed that when running my application with the frameless window. My QOpenGLWidget becomes unresponsive due to the calls to QGraphicsDropShadowEffect. Removing all calls in framelesswindow.cpp fixes this issue.

Here is a link to the known issue and they state they documented that QGraphicsEffect system is incompatible with QOpenGLWidget. For those wanting to use this utility, but that have need to using QOpenGLWidget or similar interface it would be nice to have a way to disable the QGraphicsEffect* calls altogether

[Jorgen-VikingGod]

Did not know this issue in combination with the QOpenGLWidget.
Maybe I have some time on weekend to hack in a switch for the drop shadow feature.