I mouse left-handed, and whenever I disconnect my (old-fashioned) USB mouse, or put my F35/X11/KDE system to sleep, the behavior always switches back to right handed. I have to go to the settings, unclick left-handed mode, apply, reclick left-handed mode, apply, to get it back to left-handed mode.
What’s going on here?
On AskUbuntu I found a simmilar issue.
Adding this to the startup application in ‘tweaks’ (you can install this in ‘Software’ seemed like a easy fix.
xmodmap -e "pointer = 3 2 1"
Oh, that’s a mighty fine workaround, but still it would be nicer if the bug were fixed. Speaking of which, it’s already been reported: