[Stable Update] 2022-02-05 - Kernels, LibreOffice, KDE Gear, Nvidia, Calamares, VirtualBox, Pipewire, Mesa, Systemd

I created a user account for some testing purposes. But when I click Delete User in KDE System Settings > Users, nothing happens. No password prompt, nothing …
Also I cannot create new accounts from KDE system settings.
The actions can be done from MSM, though.

Can anyone please confirm if this is happenning in my system only?