Firefox is discontinuing tab groups
Agh... https://support.mozilla.org/en-US/kb/tab-groups-removal
Thankfully I just reduced my open tabs from ~300 to ~75 last month... time to go to Tab Zero...
Tab Zero is something I can get behind
And I had just started using the "tab groups" feature. I switched back to the tree style tabs ad-on I had been using. For as long as that works...