Created attachment 823 [details]
Using the attached reproducer, make the window fullscreen by clicking the window decoration fullscreen button.
Only a portion of the fullscreen window is drawn in orange, while the whole window should be drawn orange.
This can also be reproduced by resizing the window very fast, a small portion of the window is not drawn with the correct color.
This bug does not happen on windows.
Adding a call to redraw() in display() works around the issue.
My guess is that only the previous size of the window is marked as dirty and redrawn by GLCanvas.
Any update for this issue ?
I tested 2.4.0-rc-20200306 and the bug is still there