Version: 4.3.80 (using Devel) Installed from: Compiled sources Many times when system is started, kwin shortcuts such as alt+tab and alt+f4 don't work. At that time if we click show hidden icons button in system tray, kwin crashes(I'll install debug packages and provide backtrace). After it is restarted automatically after crash, shortcuts start working.
*** This bug has been marked as a duplicate of bug 216857 ***