I realize that there's a default message here to use the bug report form for bugs, but I'm not seeing this form. So sorry if this is the wrong place for it, but there does appear to be a bug to do with the permissions, unless I'm misunderstanding something. If I enable the "View 'thread notes' member tab on own profile" permission for a user group, members of that group still cannot see the thread notes tab on their profiles. It only appears if I also enable "View 'thread notes member tab on other profiles" - but then of course they can see everyone else's notes.