Active directory Group integration V2.0.0

the Problem has been solved. The key in this case was the inclusion of the nesting Filter to get nested Groups working.

The format looks like this:
(&(sAMAccountName=#{username})(memberof:1.2.840.113556.1.4.1941:=CN=#{groupName},DC=your domain (objectCategory=person)(objectClass=user))

We included the category and class filter to rule out false positives like the nested security groups.