Very good! Some features still missing, but hopefully they will be soon added:
- resize groups in the global view (manage groups)
- allow user to choose to open the "Manage" view when clicking on the icon (as it was the case with former "Group Tabs" extension for FF<57)
- do not close tabs when change group (it seems, according to what I've read so far, that this is a limitation due to Firefox... yeah, this is improvement... but no problem, proprietary 3rd party tools like Pocket are embedded...)

Regex filters are VERY appreciated! Keep your groups clean and make sure your github tabs are always with their scrutinizer-ci friend :)

EDIT (2019-01-16) : I've FINALLY updated Firefox (had to update Fedora 26 -> 29) and I must say that it's very nice when using this (not so) new hidden tabs API. Thanks a lot for the great job !
However, I'm still waiting for free arrangement (hopefully with group resize in the "Manage" view) and the possibility to directly open the "Manage" view when clicking on the icon => then, I'll give the fifth star!

Almost nice replacement for old tab groups addon. But with numerous bugs and lesser functionality.

Idea is alright, but the implementation is too buggy:
- stops working with 'type error' messages
- searching tabs doesn't work properly
- tabgroup management seems flaky

I know it is probably just growing pains, but please focus on the basics first.

При открытии браузера забывает в какой группе я нахожусь, в итоге получается иногда что вообще без группы и мои вкладки не сохраняются. Сильно раздражает что при переключении группы вкладки все время загружаются заново, несмотря на то что ранее в этой сессии они уже были загружены. В остальном норм, Спасибо!

i need help. i removed this complement but it left me with a sea of dead tabs (my old tabs) the only way that can work now is if i have this complement installed >:(

I don't like a misclick causing me to loose almost all of my tabs. This still isn't suitable for common use.

All of my saved groups are gone after a crash of Firefox.
Pinned tabs are missing when restored from backup.

Wonderful add-on!
- It would be awesome if you could add a auto-back option to the add-on, with time and idleness options.
- Also i recently ekspirenced a bug, where the tab group i was inn got "de-registered" so that the "group" i was inn had no color. And i got the a warning message, that if i switched to another group, all the taps in my current session/de-registered group would be lost.
It seems that it got duplicated, because all the tabs in the de-registered group where present in a registered group.

Thank you to the guys working on this, rating is for digging deeper in Ticket #70 - random loss of tabs.

Just opened Firefox to find all 70+ of my tabs (in another closed/inactive group) vanished. And *yeeeeessss*, I have set preferences to "show windows and tabs from last time", as I'm sure have most complaining of the same issue here.

Ergo, worse than useless. Uninstalled in disgust, annoyance, and disappointment.

Back to the drawing board...

Working as described so far, thanks for this. FYI, breaking news that experimental version of tabHide api just landed in FF59 beta: https://blog.mozilla.org/addons/2018/01/26/extensions-firefox-59/ Hope you can get the extension working with it.

Thanks for this addon.
Feature wise, there's everything I need and it is evolving rapidly.

Unfortunately, I experience some bugs which make it a bit too unreliable atm :
- Sometime some "random" tabs groups are created (not by me). They did not come from new windows.
- When I switch from one group to another, some tabs switch to the new group (not all of them... just a few).
- Some tabs can't be moved to another group (with an error message explaining the operation is impossible)
- When switching to another group, sometime I get an error message warning that the current tabs will be closed. Don't know why but very annoying.

I can't confirm a 100%, but it seems these problems concern only tabs with URLs on my localhost or with local HTML files.
I should make more tests to confirm though.

Been testing it for some weeks now...
Randomly browser opens with no group. Randomly tabs appear empty or do not load. I had to manually save all as bookmarks like we did many years ago...
Tested in several PC's and same issues...

Very, very unrealiable at this time to say the least.


Edited:
For Drive4ik
Using v 2.3.6 All OS are Win10 1709.

Very often i lost some of my Stored Tabs by restarting the browser. I only got "New Tab" without URl ...
Sometimes ALL Tabs were lost after closing Firefox ... Very frustrating ...

So far so good. God I've missed this functionality. Please keep up the good work.

Useless. Couldn't move tabs to different groups. When I removed the add-on most of my tabs were lost.

Lost all my tab groups after using it for weeks :-(

for translating it to Farsi just send me an email

使用两个分辨率不同的屏幕时标签组编辑页面有BUG；不能缓存网页，切换标签组必须重新刷新网页；使用之后便捷程度上没有明显提升。

分组会丢失掉, 不管是稳定版还是开发板, 重启下浏览器, 分组就没了

Reliability ZERO.
App full of neat and usefull functions. Works fast.

But evry day something happens that kills my groups.

for ex: If you close the window with alle the groups in it and restore it afterwards, tha taps arent in the group anymore. if you change to the saved group its full of empty tabs. some of the tabs might still work but most of them are empty.
all the groups are worthless because they are destroyed, without backup either way from firefox recovery session exprted tab backup you're screwed.
After closing and recovering the window you need to delete all the corrupted groups and save the currents window into a new group. you cant create tabs that arent in a group after you have already more than 1 group active.

Once All my groups just disappeared without warning. wtf?
and so on. full of bugs makes it unrealiable. but its potential is great.

It is good does one wants.

I have the same issue as another reviewer below. I'm in a tab group (Main), I add some new tabs. I go to switch to a different group and it warns me 'open tabs will be closed'. If I switch groups then go back to Main the new tabs are not there anymore. I don't understand how to sync or to make it save newly added tabs? Thanks...