Hello, I accidentally found this bug report when I experienced the issue reported at https://github.com/bit-team/backintime/issues/1095 (see also: https://www.riverbankcomputing.com/static/Docs/PyQt5/gotchas.html#crashes-on-exit). I haven't tried installing and running kajongg, so this may just be a coincidence, but I hope this piece of information could be helpful.
Regards, Samuel Plavec
