MacOS 27: domain logon not populated on screen

Hi there,
I’m having trouble since my MacBook Air (M4) has been upgraded to MacOS 27 Golden Gate.
The UCS server (primary and backup) v5.2 are running on a Proxmox hypervisor.
Since the MacOS upgrade to Version 27 I cannot logon anymore with a domain user. The domain credentials for the MacBook have already been deleted and re-established, but with no change.
On the login screen I’m prompted with the local account, but the option to logon with other credentials, hiere the domain users, are not offered.
Does anybody else has made the same or similar experiences? Any ideas what can be done?
As the logon with MacOS 26.6.2 was working perfectly, the issue seem to be down to the new MacOS 27 version,
Thanks