Go to about:config and type groups
, it’s being actively developed.
There’s also another API that you can actually use if you’re a developer in Browser Toolbox, enable Browser Toolbox
and type gBrowser.addTabGroup
, you can add tabs to group using this API, and if you find a way to append it to Tab Tray you should be able to create something like this image:
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As a user of the old Opera browser back in the day, I cannot express how much I have longed for this feature! Really looking forward to this 🥳
2 points