Since I upgraded to Plasma version 5.19.4, the "Switch user" button disappeared. In previous versions it was there like on this screenshot: https://commons.wikimedia.org/wiki/File ... screen.png
But nothing appears on my lock screen, hence others are unable to start a new session from the lock screen.
The problem happens on two Archlinux instances, both upgraded at the same level.
I could not find any similar problem by googling, and my logs don't reveal anything.
Can you please guide me in finding a solution?

https://bugs.archlinux.org/task/67623

If this is not Arch specific please file a bug report here: https://bugs.kde.org The forum is the wrong place for bug reports.

Mamarok wrote:If this is not Arch specific please file a bug report here: https://bugs.kde.org The forum is the wrong place for bug reports.

It is systemd, not KDE specific. I started this thread to get help on the inspection to find the problem and in the meanwhile the source was found in the archlinux forums. That is why I linked the bug report as an explanation. I will mark this thread [SOLVED] once the bug is solved.

Same issue. The switch user button that was on the lock screen is missing in both 5.19 and 5.20. Manjaro, 5.20.2, Frameworks 5.75, QT 5.15.1