https://bugs.kde.org/show_bug.cgi?id=396345
--- Comment #5 from Martin Flöser <mgraess...@kde.org> --- I see, so the problem is probably with firefox, not with KWin. KWin is just a victim of the stupid things firefox does. You can use xev -id <firefox window id> to monitor which events it creates. I assume it's constantly updating e.g. window title. -- You are receiving this mail because: You are watching all bug changes.