I've been trying out vertical tabs for a few days now and I'm getting used to them.It's true that it gives you more space to navigate!I do have a few criticisms, though: for videos (like YouTube), the "mute" button takes up too much space and is ofte...
After trying all sorts of things, it seems like the option to "clear startup cache" in the menu "more troubleshooting information" repaired everything, i cannot confidently confirm this since firefox slowdowns seems to build up in time but so far so ...
