Rated 4 out of 5 stars

Good add-on. Personally, however, I'd prefer if it didn't display a number when there is just the one tab group.

Firefox really just needs something to remind the user when they have CREATED a tab group.

If, like me, you only use multiple tab groups on the odd occasion, it's very easy to forget that you even created one.

This review is for a previous version of the add-on (1.1.1-signed).