Have looked in the files, and there is a bug.
The only groups that is visible on all users profile is the group member has created.
The bug is in the file: ow_plugins/groups/bol/group_dao.php
This function is creating the list.
public function findByUserId( $userId, $first = null, $count = null )
And up in the code you can se what table in database this is getting data from.
public function getTableName()
{
return OW_DB_PREFIX . 'groups_group';
}
But this can't be changed, then it will be some missing info in all groups and lists.
There must be a way to fic this, or create a new function that can be used.
If not someone else fix this, i will try later to do a test. :)
Hope this helps.