Version: (using KDE 4.3.1) OS: Linux Installed from: openSUSE RPMs Let the compositing is allowed. When the window changes its title (for example, when you have switched tab in Firefox), redrawing fails and title becomes "crumpled". It doesn't occur every time, but regularly. I've attached some screenshots to demonstrate this bug.
Created attachment 38394 [details] Firefox title crumpling
Created attachment 38395 [details] Firefox title crumples again
Created attachment 38396 [details] Сhat window title crumples when new message arrives Also, sometimes title doesn't crumbles but doesn't change its state, so something wrong with KWin title drawing function.
*** This bug has been marked as a duplicate of bug 199735 ***