When you add some new groups in permission section but set different member name for each of them.
such like. 1、Admin - Admin (Member Name - Group Name);2、Super Mod - Admin; 3、Mod - Admin
then you will see all 3 new members display "Admin", which is the GROUP NAME as their name.
but, the most interesting thing is, when you try to assign someone some groups in profile page (hit edit button), and you will see these items display their MEMBER NAME (Admin, Super Mod, Mod).
i think this is a display bug, it can somehow disturb your work with permissions if you have a lot of groups. hope you guys can check this post and i'm looking forward to your reply