Right. It's still work in progress. The group has been saved in Tab overview menu. But probably you won't be able to restore it in this version.

I'm on v. 137.0.1, and I realized after some time that the top left corner now has a functional "list all tabs" icon. It includes the stored tab groups. The icon gets highlighted when I close the tab group, but I initially failed to see that since I use the desktop magnifier. Nice feature FF!

I'm on v. 138.0.1. I realize this set of features isn't fully functional yet. So, just to report my experience: I create a tab group. It shows up under "Recent tab groups." But once I've closed those individual tabs, or if I navigate to a different Firefox window, that newly created tab group no longer shows up.

I'm really looking forward to using this feature when it's ready. '

Will there be a way to open, then collapse (and expand as needed) a complete set of tabs in a tab group? It would be great to have an easy way to access tabs I want for one project, then tabs I need for a different project. So far, I just have to use a different window.

Everything works very well without any issues on my side.