Sometime after Tuesday, April 29, 2014, I suspect that we will get a bunch of dopers complaining about how the UI of Firefox has changed. So I thought I’d give you guys a heads up, and tell you what you can do to get the old UI back, if you so choose.
Firefox 29 will extensively change the UI. If you have a bottom toolbar (aka add-on bar), it will disappear, with all its icons appearing in the top navigation bar. The Firefox button will disappear, to be replaced by a three-line, so-called “hamburger” menu that will contain icons. The tabs will become curved and will otherwise look different. If you use Windows 7, the background of the title bar may be colored weird.
If the Chrome-like change in aesthetics doesn’t bother you, this may not seem like much, but the removal of the add-on bar may disrupt anyone who actually uses it. You’ll probably need to move a lot of icons to the new menu.
Or, as I promised, you can get the old UI back. But it’s still a bit tedious. Once you have Firefox 29, download the extension Classic Theme Restorer. Then, if you want the addon bar back, right click any tool bar to enable it, and use the Customize button in the new toolbar and drag everything back where it was. Be sure to also check out the options for the addon for more UI tweaks, like restoring the bookmark button in the address bar or getting back icons for older extensions like NoSquint.
Previously I would have recommended avoiding the changeover entirely by downloading Pale Moon, a fork of Firefox, but I feel that some basic features have not been ported over. And, unless you know which folders to copy over, you will lose all your customizations. Both ways will be disruptive, so I feel you might as well stay with the official version of Firefox.