Group invitation bug

Check out this image
As you can see I can accept or reject the invitation to the group I’m already a member of.
Also, if I click accept nothing happens and I haven’t tried rejecting as I don’t want my active games to be cancelled.
If I remember correctly this happened like this:

  1. I received a notification with the invitation
  2. instead of accepting the invitation I went to the group page and joined the group the usual way