New user having had to return to my old, stable and reliable Debian 9 system which was resting for a while when I was working on another machine with openSUSE Leap 15.0 installed. Both machines are running KDE desktops.
My openSUSE machine suddenly started to exhibit weird behaviour until I could no longer control or shut it down and had to recourse to a keystroke REISUB shut down. It seems the system is broken and will take me time to repair so I cranked up my old Debian system and all was well until I updated.
Since I updated the Debain/KDE system I find I now have some unwanted and unrequested KDE accessibiity modules which will not go away. I have found the system has become very unstable and exhibits problems similar to those on my openSUSE before it crashed including delay of mouse response, freezing of screen and other horrors.
Because I could not get rid of the "kaccessibleapp" I asked and was advised to purge the kaccessible module, which I did.
Great joy because not only was the offending widget removed but my system is now working correctly again. Thought I would post in case others have problem.
Once again KDE strikes.
Time to change to another desktop I think.
Budgie.