==review update - version 0.2.11== Rated 5 out of 5 stars
...as of version 0.2.11 (2012-07-11), VTb is back to viewable for me with Ffox 16.0a1 (2012-07-11)!
kudos for the quick & timely update of a nice addon --especially for wide screen monitor users and/or multi-addon/button power users! :-)
(note: I don't use the "auto-hide" feature some have commented on, so can't say as to that specifically)