If ldapsam:trusted=yes is set, neither net rpc group members testgruppe5 nor "usrmgr" list group members. Witout ldapsam:trusted=yes this works well. Group and members are LDAP objects. The attached log shows usrmgr listing members of testgruppe5 - there is one user "viadmin" in it which is not being displayed.
Created attachment 2187 [details] smbd log
99% this has been fixed with r19083. Please re-open if that does not help. Thanks, Volker