Authorization of groups to folders is no longer possible

Authorization of Groups to folders is no longer possible.
I want to authorize Groups to their specific folder, but the groups werent in the selection. Only the last 5 groups I’ve created a few months ago are in the selection at the folder. can someone help me please. If you need further Informations please ask me.

The Nextcloud instance is a Docker container and is on my unraid Server. The DB is a postpostgresql15 container also on the unraid server. Both of them have the latest version.