Performing a group search with the Search Restriction SearchContext.GROUP_PRINCIPAL_MEMBER currently fails and returns all groups

Performing the following search:

        SearchRestriction restriction = new SearchRestriction(SearchContext.GROUP_PRINCIPAL_MEMBER, "admin");

        final SOAPGroup[] soapGroups = securityServerClient.searchGroups(new SearchRestriction[]{restriction});

Will return all groups instead of returning the groups "admin" is a member of. The current work around for this issue is to use the specific "findGroupMemberships" call on the security server client.