Hi puzzlezaddict I got the orange light appearing on the bell icon. But when I clicked the icon it still said "no notifications". I only saw your reply here because I came back to this thread to see if anyone had responded. In other words, I have to go looking for people mentioning me by actually checking comments I left on threads. I don't get a notification.
Not only that, but while I was typing this reply, I was suddenly logged out (I didn't do it!) and I had to log back in. This forum seems like it's still pretty glitchy.
EDIT__
After getting suddenly logged out, I now magically have all the notifications. Not sure if it will keep working though.