Plasma + sddm

[Frédéric]

Hi,
I'm running Plasma + sddm on F31. Since a week, I try to use the
computer with multiple users and then I log off before the other user
logs in. When I log off, the screen just freezes. I can switch to a
console screen with Ctrl+Alt+F2 and kill all processes of the first
user (systemd, agent, sddm_helper) until I get the login screen again.
Very annoying.
Is there a way to make it work?
Kind regards,
F