Comment 4 for bug 1573526

Empty 'wbinfo -u' seems to be regression after fixing badlock vulnerability. There are patches available. See https://bugzilla.samba.org/show_bug.cgi?id=11872

While empty "getent group <domain-group>" can be fixed in smb.conf by adding this:
  winbind expand groups = 1
Default value has been changed to 0 in samba 4.2, see man smb.conf. I have to add this line to make CUPS work (see https://github.com/apple/cups/issues/4611 ). But normally you should not change it, since 'groups <domain-user>' works fine and most software use user's group list instead of group's members list.