Comment 3 for bug 1768693

I guess I should add that this is caused by SDL hinting that the compositor should be disabled even when the game is running windowed. I've unchecked "Allow applications to block compositing" awhile ago and forgot I even made this ticket.

I do still occasionally (once or twice a week) get accelerated applications failing to redraw, but since either 19.10 or 20.04 this only happens at the application level instead of the whole desktop and simply restarting the application (or dragging the tab to a new window in Firefox) works around the issue.