After I installed opensuse Leap 42.1 everything went OK. At some point the
window manager stopped working properly. It was a mess. At the end I
identified the problem: I had changed from the default window decoration to
plastik style. After I changed back to breeze the problem was solved. The
purpose of this message is mainly to put some keywords easy to find in
Internet searches for people finding the same problem (I did a search without useful results)
Also I think the plastik theme should either be fixed or removed from the
distribution.
One important keyword is missing though: which window manager, or which desktop?
Have you updated your system to the latest software?
Currently i can use “plastik” without problems.
Best regards
susejunky