LDAP user group filter not working?

Hi there,

I'm trying out to set the LDAP user group filter with rocketchat. However this does not seem to work. I can login without the filter just fine via LDAP, but with Groups it is not possible, at least for me.

Here are my settings that I made in the Admin Frontend:

Group ObjectClass:  groupOfUniqueNames
Group ID Attribute: cn
Group Member Attribute: uniqueMember
Group Member Format: uid=#{uid},ou=People,dc=example,dc=com
Group name: Administrators,ou=Groups,dc=example,dc=com

The log on my ldap server then however shows me the following filter:

filter="(&(objectClass=groupOfUniqueNames)(uniqueMember=uid=#{uid},ou=People,dc=example,dc=com)(cn=Administrators,ou=Groups,dc=example,dc=com))"

And this does not seem to work to get an user back that belongs to a Group. I heard that this group membership check needs something like an ldapcompare method or so. Im using 389 LDAP server, but should be the same as in openldap

Can someone give me a hint what I'm doing wrong, or if this is really a bug and done the wrong way by rocketchat?

Rocket.Chat Version: 0.50.1
Running Instances: 1
DB Replicaset OpLog:
Node Version: 4.7.1