https://bugs.kde.org/show_bug.cgi?id=361154
--- Comment #88 from Martin Gräßlin <mgraess...@kde.org> --- That was a difficult investigation but I found it. 1. The game opens as normal window and gets a decoration with a shadow 2. It has the hint to disable compositing, which schedules for next event cylce 3. It switches to fullscreen 4. This causes the decoration to get destroyed including the shadow 5. The shadow does not get directly destroyed, but in next event cycle 6. KWin disables compositing 7. KWin destoys the shadow without compositing being active any more 8. This causes a shadow to leak in the cache 9. After resume the shadow is in the cache and things break. -- You are receiving this mail because: You are watching all bug changes.