Constant crashes of Libreoffice 6.0.3-1 in KDE Plasma

I have constant crashes of Libreoffice Writer 6.0.3-1 in KDE Plasma (under Arch Linux). I am writing this here because it only occurs while in Plasma. When I run it in my i3 session, I have no problems.

The crashes happen during writing, but I have not been able to detect a single trigger.
I’ve tried all kinds of workarounds I’ve found online (disabling java, disabling experimental features, and so no) but to no avail.

When the crash occurs, mouse and keyboard stop responding, and after more or less 20 seconds, my Plasma session logs out.

I have two questions:

  1. How can I generate a crash report (in Linux)?
  2. Any ideas on how to solve this issue?

My system details are:

  • KDE Plasma 5.12.4
  • KDE Frameworks 5.44.0
  • Qt 5.10.1
  • Kernel

Same here, no solution either. It only happens in KDE and only while using Libreoffice. At the moment on KDE Neon. But I will be dropping KDE because of this as soon as Ubuntu 18.04.01 comes out.

I have met another person at a conference. He had the exact same laptop, which was a thinkpad x1 yoga 3rd gen and exactly the same problem. Maybe the device is also important and might be the reaseon why I cannot find more information concerningn this most crippling bug.