Kopano Hidden Flag not working

Hi

I want to hide some users from global addressbook.
The kopanoHidden flag is set in ldap but i still see the user in gab.

The mapping of the configfile is done correctly.

Does anybody know how to solve this problem?

I use following versions of kopano:
core-8.5.81.286_0+51-Debian_8.0-amd64
webapp-3.4.6.1219+713-Debian

Thanks
Best Regards

best guess: you are an administrator

admins always see hidden objects

thanks
after deleteing the admin flag users hidden users are not visible anymore