An anonymous reader writes: Firefox 45, set to be released today, will remove the Tab Groups feature, a feature that many people used, but Mozilla decided to ask due to buggy code. The good news is that a developer created a perfect replacement for this feature as an add-on. Users that use Tab Groups on a daily basis are urged to install the add-on before upgrading to Firefox 45. The add-on will take over from the browser's Tab Groups feature without any complex configuration. Users that update to Firefox 45 will have their tab groups moved to their Bookmarks as folders, which may be difficult to move back into the Tab Groups add-on later on, especially if some people have hundreds of URLs.