The location bar (and the search bar) have shrunk to absolute minimal width. The appearance and the graphic content (logo of the visited site, star for bookmarking, and refresh arrow) appear normal, but the space for entering a url (between the logo and the star) is just one character wide. When I type a url, the typed characters appear one after another, but never I see more than just one character. ===== Miracuously, this problem disappeared, just after closing and reopening Firefox a few times (of course I had done that also before reporting this issue, like I also had done a re-install ...)