Dear Maintainer,


The problem is not always 100% reproducible. I can get it to occur frequently
using the following steps

Play a video file in dragon player. (I tried it with avi files)
Click the playbar to position it near the end of the video
Put the video in fullscreen and wait untill the video stops playing
Press esc
Close dragon player

Kwin then crashes and restarts itself and starts the kde crash handler. It could
not produce a meaningful stack trace.

Please see attached image displaying the screen when the crash occurs.