I think I've done everything you said, but it still is only showing me the second - display only - table. This is set to Show If Other and should only show for non-Admin viewing a record other than their own.
I also have admin priv so I should see the first table, with editable fields, along with the Group field. But no matter who's record I select (even my own), I only see the display only table.
I've attached the latest version of the file.
Thanks for your patience.