Sorry, the bugs I said were my fault. An adaware had changed my Firefox settings. Now it is fixed and the add-on works correctly. Simple Tab Groups works fine again.

Great mod! 5 stars for the value it adds despite having a hard time getting regex to work.
Wanted to move over many of my tabs using regex but couldnt get it to work at first. Thought it must be broken, but after moving manager and a couple of tabs to a new window and then back again it suddenly worked like expected (catch when refresh/active tab). A couple of tabs it still still refused to catch on reload so copied the address to a new tab and then it caught it for some reason. (Only had such problems with tabs that existed on installation. New ones are always ok it seems)

A few versions ago I can't do a manual backup, when I click on the "Save" button it simply does absolutely nothing, automatic copies don't work either. The only way I have to save my groups is with the option to save in bookmarks, the truth is that I prefer to save it in a separate file because of what may happen, the profile could be deleted and I would lose everything if it is only there, I hope you can Fix this bug.

This add-on has worked superbly for ages, and has grealy improved my browser experience.

A minor bug in the recent update has prompted me to review an otherwise flawless add-on, not because I'm irked, but because the devs have responded to the bug enquiries swiftly, concisely and clearly. Ironically my faith in this add-on has been raised even further.

I definitely recommend this add-on!

Updated to 5 Stars since the issue I have seen has been fixed in the update. Great Addon I have installed in all Firefox installations I am using.

FIXED: Unfortunately, the latest version (4.4.2.1, from 26 Feb 2020) contains 2 major bugs, which ruined the previously awesome add-on:

1) When I now click the STG icon in the Firefox (v73.0.1) toolbar, the add-on shows me a listing of the _tabs_ in the active group, rather than a listing of all the _groups_ that I have created.

2) The "Move tab to group" functionality (from right-click context menu) no longer works. It seems to do absolutely nothing now.

(Assuming that the above bugs will be fixed soon, I'll gladly recommend the add-on to all users!)

– – – –
EDIT (5 March 2020): Yes, the update to v4.4.2.5 indeed fixed the bugs mentioned above. Superb! Thank you Drive4ik. =) =) =)

Дополню сообщение gamover
Версия 4.4.2.4, последнее обновление 26.02.2019, новые обновления не находятся. Кнопка TabGroup все еще показывает по умолчанию не список групп, а список вкладок в группе. Раньше было наоборот

Works well and has saved me many hassles keeping track of things. My only complaint is how it reloads all pages on launch, slowing things down.

Otherwise, a wonderful tool. Thanks for all your work.

Last update changed it to show all the tabs in your current group rather than the groups, making it extremely tedious to switch between groups. The addon is much less useful now. Edit: Fixed

If you use a lot of tabs and like to keep your sessions organized around themes, this is an essential tool. Don't leave home without it!

Кнопка TabGroup стала показывать по умолчанию не список групп а список вкладок в группе. Это очень не удобно. Почему-то стали дублироваться все вкладки в группе при ее открытии. Раньше все работало отлично.

Стоит последняя версия: 4.4.2.4 (по крайней мере обновлений не находит), но проблема с отображением вкладок вместо групп присутствует все равно.

Кто нибудь знает как отвечать на комменты здесь? Какая-то кастрированная система комментирования.

新版本工具列圖示點擊竟然改成展開群組。
關閉分頁後其他分頁亂跳，切換群組不順暢，毫無長進。

upd: Now that I understood, how to use regular expressions with this extension, it's become really helpful. Thanks for your help.

Smooth Extension but the Pocket button does not work.

Really useful and helpful extension that generally works quite well. The two things on my wishlist for it would be (1) some way of having it be able to run without making Firefox restore all my tabs when I open it; (2) syncing my tab groups across different devices (my home + work computer).

Hi. Love this! Took me a while to replace tab groups but finally I found this! Great job. I'm loving the workflow improvements it brings and it's first class in reliability too. Thanks you for creating this for everyone crying about the loss of tab groups, this is actually better!

DEV: One thing i'm not certain about is if it's possible to include pinned tabs under tab groups i create, is this possible?

This addon saves my ass. An incredible addon.