not all LDAP groups shown

When there are many LDAP groups, only the first 100 are shown. Even if a group has already been used in confluence (may use confluence), it might not show up any longer.

Also, when manually entering
/admin/users/domembersofgroupsearch.action?membersOfGroupTerm=mygroup
for a group that is no longer displayed, there are no group members shown for that group

As soon as I limit the number of LDAP groups (by using an appropriate LDAP search filter), the group is shown again.

The groups still seems to work, even when not shown - at least the users of that group still can login.

However, this causes problems with the Custom Space Usergroups Management Plugin. If there is a large number of LDAP groups, the groups used for the confluence users is not shown and this plugin is used, the members of the group are not able to login anymore.

The LDAP server seems to work fine - it also returns all the groups (i.e. there is no limit on the entries returned). I checked this with ldapsearch.