Works in FF57, however have an issue with dragging things (like a text link or an image) to become a new tab on the side, I get jumped to the new tab instead of it loading in the background.

This extension is the one of the main reasons I continue to use Firefox instead of Chrome as my primary browser. However, I don't like the new looks for Firefox 57. I don't want to see the "Tree Style Tab" block at the top of my list of tabs, I only want to see my tabs. I also want to get rid of the new-tabs button at the bottom of my list of tabs. I also don't want to see tabs horizontally across the top bar of firefox when TST is open. I still love the extension, and it feels a lot less buggy than it did before 57, but I want the appearance to be decluttered and get out of my way more like it did before.

Great extension. Don't know if it's possible with Quantum limitations to add an option 'Protect tab' (from accidental closing)?

Stil buggy, open a link on a child tab and it will hide, despite disabling the option to not collapse the tab, this happens plenty of times, and it's annoying. Rarely happens but, sometimes the tab will just be out of sight, and have to CTRL+TAB to get to it. There should be a way of resizing them, they are too large for my eyes.

Still good tho.

Dev if you need a showcase, or a way to replicate the collapsing issue, go to the Tree Style Tab extension page (https://addons.mozilla.org/en-US/firefox/addon/tree-style-tab/) and go to More extensions by Piro (piro_or) and middle click in one of them, make sure there are no other child tabs, otherwise it won't work.

Auto-hide was the most remarkable option in this expansion. Now this expansion has lost its significance for me. I beg you to return the necessary property of Auto-hide.

Автоскрытие было самой замечательной опцией в этом расширении. Теперь же это расширение утратило свою значимость для меня. Очень прошу вернуть необходимейшее свойство Автоскрытия.

Great extension, have used it since I discovered it some years ago. I love that it is still being worked on and updated!

Using with Firefox Developer edition, the Firefox 57+ version is pretty good. I'm used to having bookmarks open on the left side and tabs on the right, which doesn't look possible anymore, but I can adjust. The one thing that *really needs to be an option or default* is getting rid of the default tab-strip on top like the old extension did. It would be most preferable if it just showed the title of the tab you are on, like the old extension did.

I can't live without this extension, so I'm putting up with having a tab bar on top AND a tab bar on the side, but that is definitely sub-optimal. I see there's a way to disable the tab bar on top with a "chrome/userChrome.css" in the Firefox profile folder, but I'm on the fence about showing nothing up there (most prefer title of page).

This is a new version so some bugs are expected, hoping for the best, and thanks to Piro for this great tab organizer.

You can disable the horizontal tabs on the title bar by adding the following line to userChrome.css in the Chrome directory of your Firefox profile: #tabbrowser-tabs { visibility: collapse !important; }

If you don't have the Chrome directory and userChrome.css, make them. Go here for information about how to access your firefox profile: https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data

I hope Piro-san will solve this in a smarter way.
And Thank you so much for your hard work. This extension is the reason why I never switched to other browser.

Like many other commenters, the possibility of having tabs
1) on the side
2) ordered as a tree
is one of the main draws of Firefox (privacy enhancements and extensions being another).

However, in Firefox 57 on MacOS, the performance with the add-on seems worse than with the native tabs UI, both at startup (when displaying my 100+ tabs) or when I opend many tabs in a short span of time.

The problem could well be due to the WebExtensions API that it uses and not the add-on itself, but it'd be great if you could confirm that you have thought about optimizations, piroor.

But most importantly: thanks for your work! :)

PS: I also had an issue a month ago, not long after upgrading to v57, where the extension would permanently use up a lot of CPU (the load went down as soon as I disabled it, so the causation link was pretty clear). I ended up solving it by saving all my tabs as bookmarks, clearing the tabs, then restoring them: the previous tree must have been "corrupted" in some way.

Just upgraded to ff 57, every thing is working great except:
1) ff tab bar not hidden
2) when collapsing a tree it overlaps with the tabs and trees above it. I have to keep all the trees expanded now when using the Metal theme!
---
So for those having the same problem with the metal theme, adding this fixes it:
.tab.collapsed {
margin-top: -24px;
}
.tab {
height: 24px
}

great but now i can't use it on newer firefoxes like 52+

It makes FF57 usable at least(but still missing much functionality). Is there any chance we'll be able to remove default tab bar after installing this addon? Is there webexternsion api to do this? Another thing is that I cannot find a way to move tabs to right instead of left side of the window...