Bug 495830

SUMMARY
As the title says, I can't login with the SDDM Breeze theme, if I do it on my second monitor.
It's a bit weird though: If I input a password (can be correct or incorrect) the profile and input box greys out, as if an invalid password has been entered. However, it just stays greyed out.
If I input an invalid password on the other login prompt, the broken one updates to the "normal" state (it shows "Login failed" and allows the input of a new one. Login itself is still broken).
I have to login on my primary (left) monitor.
This is not an issue on (at least) the "Elarun" theme (it's a random one I had installed).

STEPS TO REPRODUCE
1. Apply the Breeze theme via the SDDM-kcm dialog
2. try to log in on the non-primary monitor

OBSERVED RESULT
Login hangs, user profile and password prompt are greyed out and can't be interacted with

EXPECTED RESULT
Login works

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.2.2
KDE Frameworks Version: 6.7.0
Qt Version: 6.8.0
Kernel Version: 6.11.6-zen1-1-zen (64-bit)
Graphics Platform: Wayland

ADDITIONAL INFORMATION
Locking the session doesn't have this issue and works without problems.
Logging out has this issue.