Platform: Firefox 3.6. Windows XP Professional 64-bit, SP 2.
You're right, it wasn't rendered correctly in Firefox. That's mainly because it was never intended to deal with long titles (it was supposed to just say "Return to Question" -- the [changing!] title itself is part of the revision diffs, as Sathya's screenshot shows).
This will be fixed in the next build.
Here's what I see (Firefox 3.6.13).
Since the items that should be there are visible off to the right of the screen it could be a CSS issue, caused by the wrapping of the extremely long question title?
This is what I see - What am I missing out ?