Rated 3 out of 5 stars
problem solved! it seems that when the menu bar is active you also get the title bar. to hide the title bar you have disable the menu bar. I'm not sure if this extension caused the problem, but it is solved nowThis review is for a previous version of the add-on (1.4).
Rated 1 out of 5 stars
this is garbage! after I installed this and deleted it again I still have the title bar in FF4. And I can't make it disappear, even when I choose 'tabs on top' modeThis review is for a previous version of the add-on (1.4).