I have Tab Mix Plus installed and have the tab bar removed when only one tab is open. With Firefox 11, everything was looking alright. Now with Firefox 12 (on Windows Vista) I see the following when only 1 tab is open
(sorry for the red border; that's just from the snipping tool), while for 2 tabs open I see this:
I don't like the design in the first case at all. How can I achieve that I get essentially the same design for one open tab as for more open tabs, but still with the tab bar removed?