After upgrade to plasma 6, lock screen is shaking

[stefano.balzarotti]

After upgrading to plasma 6, lock screen is broken and I am not able to input password, the lock screen continues to shake like when you input and try to login with a wrong password, but I am not able to input a single character because of this animation.
The only way to unlock is to change session and send loginctl unlock-session.
My setup is Gentoo 6.6.62-gentoo-x86_64, with openRC,
KDE Plasma 6.1.5
KDE Framework 6.7.0
Qr Version 6.7.3

I am using X11 instead of wayland, it wold be nice to migrate to wayland but I didn''t make it yet.

Are you aware of this issue with plasma 6? tell me if you need any log or information for the investigation.