For about a week or two something changed with the initial login form.
I have two displays, my username is shown on both of them and the password
prompt is also enabled on both. But if I input my password on the second screen
and hit Enter, the field will just get disabled and nothing will change, no log
in will happen.
On the first screen I'm still able to input my password and log into the
system.

Also buttons below password field (Sleep, PowerOff, etc) are always shown
disabled on the second screen.

If I log into the system and lock my PC again, then the login form is working
on both screens without an issue.