Excellent replacement for Tab Groups, already has most of its functionality.
Only one major problem: memory use spikes ~1.2 MB per tab in active window every time I open Panorama View (although it can be reduced with 'Mimimize memory usage' without closing Panorama View). I'm guessing it is taking screenshots of all tabs, even if they haven't been loaded or haven't changed? Can the quality be reduced perhaps?
Minor:
1. going to a pinned tab does not restore previous tab group
2. pinned tabs can be moved between groups but are always visible
3. tab groups can't be scrolled if they include too many tabs

EDIT:
4. sometimes stops working partially: new tabs are not shown in group, a closed one hasn't disappeared from the group and can't be selected or closed, possibly caused by moving tabs between windows. Once after restart I think a tab or 2 were missing, might be related
5. once I had to select each tab group once for the one I was moving to go in front of them, not behind

Tab Groups are back! Thank you for the development!

Really happy with this extension, works as advertised including the tab hiding!

Very very close to Tab Groups from before FF57 which is what I was looking for. Few things I'm waiting for before I rate 5/5:

- Ability to arrange/resize tab groups to fill the entire page
- Ability to name groups
- Add a hotkey that we can customize! If not, then a hotkey that the author chooses is fine too. I just want the ability to use my mouse button to open the tab groups instead of moving my mouse and clicking.

UPDATE 4/10/18: Latest updates have pretty much fulfilled the above. Changed to 5/5. Great work!

My only suggestion now would be a dark theme if possible.

I've been missing this since Quantum came out. I do wish pinned tabs wouldn't appear in any of the groups (or were just handled differently), and if double-clicking in the empty space crated a new tab group, but those are minor gripes.

Would be curious to see if some integration with tab containers could work, e.g. having a tab group in which all opened tabs belong to a container.

Absolutely brings back my favourite feature.

Great job. And it's work faster than original firefox feature.
I don't like current tabs are hidden when opening panorama, but it's nitpicking

Looks amazing! I love the fact that it ties into tab hiding and I can add and rename groups. Instant 4-star for functionality and it was exactly what I was looking for.

I would bump this to 5 stars if it was a bit more visually appealing. Maybe options to color groups and tabs, or change the background of the Panorama View page to spice things up, but I know that functionally it's still being improved on so this really is not a major deal. I will continue to use this addon for the foreseeable future, and it's perfect to use at work.

I can't seem to be able to save the groups after I have made them. Tab hiding seems to work well.

Still has some rough edges and needs FF59b with enabled tabhide to work "properly", but that way it is the perfect replacement for my dearly missed tabgroups :D

This is closest you'll get to replace the tab group addon

Great job!
We could restore the tab custom which we used to. With this add-on, it's easy to arrange all tabs we opened.

For the best experience, it's necessary to use Firefox 59+ because of tab hiding function.

It is better than nothing and it is even looks familiar to what we had before FF57. But despite it gives ability of putting tabs into different groups it is still missing its main purpose - switching between groups making tabs from other groups invisible.

没有达到提升同时访问多个页面便捷程度的预期

ti is awosome

Please do not require the user to manually resize or move any of the groups.

If the addon is to be useful I believe is has to, by default after a single click, present all the open tabs as large as possible while at the same time not require any extra interaction.

The concept of resizable containers in the original Panorama addon did not work and you should rather abandon it - it would be much preferred if group divisions were made automatically.

auto-grouping by domains needed