Created attachment 731684 [details]
knotify_libjack wdebug kcrash file (the 6 is just the 6th one I saved)

A knotify/libjack.so.0 crash will regularly occur once during a session. It may
take a day or two for the bug to appear, but on access to sound theme sound (no
one in particular, e.g. dialog-open, minimize, etc.) a kcrash report appears
and the desktop sounds no longer play until you restart the desktop. This time
it took 2 days 5:29 minutes under heavy use to occur.

It is strangely random when it happens, but very consistent that it *will*
happen. This is not new and has been around at least since 13.1 (it may go back
to 11.4). I have experiences this on two separate laptops with 13.1 and Leap
42.2. (I really think it was there in 11.4, but I'm far too old to remember)

I have attached a wdebug.kcrash that details the error.