Bug#985994: kwin-x11: crashes randomly on ALT-TAB for switching between windows

[Bernhard Übelacker <bernhardu@mailbox.org>]

Hello Russel,
thank you for the detailed backtraces.
Unfortunately they point into Qt's javascript module,
finally trying to copy memory to a null pointer.

I have not found a hint to similar crashes in
upstream bug tracker.

Could you please provide which theme you are using,
or if there are maybe some third party extensions in use?

Maybe you are aware of some not widely used settings
that you changed, which might be related?

Kind regards,
Bernhard