Lost all groups after updating to Firefox 57

[Fl1pi]

When I was using Firefox 56.0 I had an addons called tab groups and tab counter. After I update to Firefox 57.0 tab groups isn't working anymore and I lost all tabs from different groups, but using addon tab counter I can see that I still got same amount of tabs. I think the tabs are still available but problem is that I can't switch between groups. I tried to install Firefox-ESR and but Tab Groups is not working there too it types disabled. Is there a way I can get Tab Groups back so I backup my tabs ?

[rpasta42]

See this reply from #560.

[boberj]

Or, if you just want to restore your tabs (not the groups) see this reply.