I am not sure if this is the correct module for this kind of bug. I suspect that the following bugs are all somehow related: - https://bugs.kde.org/show_bug.cgi?id=357422 (Alt+F1 for K menu does not work) - https://bugs.kde.org/show_bug.cgi?id=357419 (Ctrl+Esc does not work) - https://bugs.kde.org/show_bug.cgi?id=356880 (Keyboard layout switcher does not work) - https://bugs.kde.org/show_bug.cgi?id=357420 (Print Screen key does not work)
I think the problem was my base system. After a fresh install of openSUSE 42.1 the problem is now resolved.