I bumped into the same issue, and I was lucky enough to remember that the only change I made to my system today was to install [okular](https://github.com/KDE/okular).
The fix above works fine, as long as I don't open okular. If I do, and then reboot, I am back to square one.
Dropping an update here, [same as I did on Stack Exchange](https:/ /askubuntu. com/a/1490412/ 1105829):
I bumped into the same issue, and I was lucky enough to remember that the only change I made to my system today was to install [okular](https:/ /github. com/KDE/ okular).
The fix above works fine, as long as I don't open okular. If I do, and then reboot, I am back to square one.
Note that another user is suggesting that [adding hidden files to the folders prevents this from happening](https:/ /askubuntu. com/questions/ 1488100/ okular- breaking- home-directorie s-links).
I cannot find any mention of this bug in the KDE bug tracker, so maybe I'll try to add a new one in the coming days. I hope this helps.