generally good, although the experience is different from the original version. One issue I run into from time to time tho, is that it seems to be randomly hiding 1 tab that I open. It's pretty unpredictable when this will happen but you will suddenly find there's 1 tab missing that you can't find unless you dig into the "hidden tabs".

Please add option to disable groups counter over toolbar icon, and also ability for custom CSS on Panorama page.

It's Good

A tool that puts order on an unwieldy list of tabs for many different uses

Indispensable! Absolutely necessary!

Great simple tool for organizing tabs but unfortunately it doesnt automatically back up your tabs (??? why) so I lost all of my tabs from an accidental misclick of closing my main window :/

Not store auto-backups

indispensible. i literally won't use FF without it. as a professional developer, i can't understate how useful this addon is for keeping FF in line.

Having over 1,000 – 1,500 tabs opened on my 16GB ram PC for over a year, I find this add-on extremely helpful. Not too infrequently firefox just crashes without showing slowing-down symptom first. Other times disabling this add-on and enabling it a few second afterwards will usually solve the problems without losing any tab groups.
I have one feature to request. Having a dozen windows opened, each with several tab groups, I have on my taskbar a dozen icons with name labels. As it is, the name labels vary reflecting the name of the tab in that window I last visit. It would be more informative if , let’s say, a window contains a lot of tabs about health, the window name label on the taskbar retains and remain the name HEALTH I give for that window. The procedure to request a feature in GITHUB is over my head.

Looks nice, but requires "Access your data for all web sites". It means that the app will have all usernames and passwords entered on a web page. Even the password of my online banking. This is a serious risk we shall all consider!

Excellent extension, exactly what I want. The group switch can be done easily in popup mode. Would be better if the number and name of groups can be stored.

I logged in to tell you that this is a great add-on. Searched for quite some time for specifically this. I love many other features from firefox and other add-ons and without this add-on, firefox was almost a deal breaker. Thanks so much!

Slight User Interface issues like unable to go to a group without selecting a tab from that group.