Earlier quoted context omitted.
Agreed. I work at Mozilla as an engineer for Firefox, and I'm generally happy to see this. I currently work on tab groups, and I'm curious to see what their implementation will look like or whether they'll try to fast-track our work-in-progress once that's somewhat viable. For the sidebar and vertical tabs, they seem to have implemented their own thing rather than using what our team has been working on. At a first g…
Tab groups again? I don’t remember when exactly, but like 10 years ago Firefox already had this feature. I was using them happily, organising all my numerous tabs to a dozen of groups by theme (work, social, movies, etc). But then Mozilla decided: “Nobody is using tab groups, screw it!” and removed them. All groups and tabs were lost. Now history will repeat?
There are many things different now that might make it work better this time. If not just that it's 14 years later, different UI, and the pattern being familiar from other browsers, might make a difference too. But no guarantees, of course.
(Note: I don't work on Tab Groups.)
[1] https://web.archive.org/web/20110613070035/http://www.azaras...
[2] https://addons.mozilla.org/firefox/addon/simple-tab-groups/ is widely used, but I'm not sure if it does the overview. Other extensions do.