When I upgraded from Firefox v22 for Mac to v23, the tab bar started appearing ON EVERY PAGE automatically, even when I don't have multiple tabs open. How do you get rid of the tab bar? I don't use tabs at all and prefer to open different windows rather than tabs. Thank you.
In Firefox 23, as part of an effort to simplify the Firefox options set and facilitate future improvements to Firefox, the option to hide the tab bar was removed.
Fortunately, this can easily be resolved if you desire the keep tabs hidden. You can install "Hide tab bar with one tab", an extension hosted on Mozilla's add-ons site, which will restore the ability to hide the tab bar.