@saint The UserManager is the local database auth system. When using LDAP, it will go away. This is expected.
Because the group in the Cloudron User Directory for a User does not seem to show up in DW's ACL:
The ACL view is very tricky to use. Even in UserManager there is actually no way to create a group. It just "appears" 🙂 This took me a while to figure out - https://forum.dokuwiki.org/d/4935-howto-create-group
You just put a group name like below and click select (you have to click the namespace on the left as well). And then, you can adjust the rules and save. Once you have put the group there in an ACL, it will apear in the Group dropdown for the future.