During a "bad" session, if Stellarium is switched to windowed mode and then AltTab-ed, after that the behavior disappears even if Stellarium is restored to full screen mode.
Another parallel to the screen flicker problem.
During a "bad" session, if Stellarium is switched to windowed mode and then AltTab-ed, after that the behavior disappears even if Stellarium is restored to full screen mode.
Another parallel to the screen flicker problem.