No, I think it's fine here. It sounds like an issue with those applications (Krusader), I'm actually not sure if KDE itself (Krusader is built as a KDE application) understands kerberos authentication. If kinit(1) and all work then it's not a kerberos issue or an issue with the network service.
There aren't a lot of users that have that combination, so it may not get a quick answer.
Yes, if you first execute the command kinit and get it Kerberos ticket, for example,
Krusader it stops asking username and password when connected to Windows share
and you can get the list contacts at Evolution Address book from Active Directory.
But how to get Kerberos ticket in the login process in the window LightDM?
Or complete registration not local database tdbsam on computer with FreeBSD but database Active Directory?