BUG? MS Active Directory Names with German Umlaute

We have connected our Dreamfactory 2.1.3 with our Microsoft Active Directory. The Logins work as long as the name field of the login has no “Umlaute” (äöü). As soon as there are Umlaute in the name (not the username) I get the error “invalid name field value”.

Seems like a bug to me?
Or can I fix this somehow?

I just checked and got the same behavior on the latest version of DF. I’ll speak with the dev team and file a bug.

Thx for the quick response.