https://bugs.kde.org/show_bug.cgi?id=504900
--- Comment #6 from Adam Fontenot <adam.m.fontenot+...@gmail.com> --- Repro'd with 6.4. Could also reproduce without focus follows mouse, so that's not the cause. It's interesting that the flickering for me is always between the desktop wallpaper and the hovered window. I wonder if the way KWin implements the effect is by doing the "hide all windows" action when the cursor leaves a thumbnail, and then immediately showing the window for the newly hovered thumbnail. That seems to be the best explanation I can think of for the weird effect here. Sometimes the strobe even gets "stuck" on the desktop and I see the wallpaper for 4-5 seconds while hovering over a window thumbnail preview. I've also noticed that the faster you move between the two window previews, the more common the issue seems to be. The longer it takes to draw a window, the more likely it is to see an issue with that window. (All based on very subjective judgments of course.) The flicker loop might be KWin getting confused about whether the desktop or the active window is on top, and switching between them, since the cursor is active over the thumbnail. That's just a guess on my part though. Side note: but I find even the minimal "intended" flickering caused by the margin between the window thumbnails pretty irritating. I wonder if that gap might be closed and whether doing so could end up fixing this issue indirectly. -- You are receiving this mail because: You are watching all bug changes.
