Nice extension overall. There are a few minor tweaks I wish it had but nothing too big.

GANZ WICHTIG: Ich möchte die Tab-Leiste schmaler ziehen, aber das geht leider nicht. Ich würde es gerne so schmal ziehen, dass man nur die Symbole sieht und Lautsprecher.

A must have extension. 4-stars because of some features I would like to have:
* navigate to tab group instead of individual tabs with Ctrl + (number)
* renaming tab group

to.pure.makeup.to.let.something.in.pure.idea.clear.convident

really cool addon but i really hate how it opens a new window all the time and i do no know how to turn that option off. it also takes up a lot of space on the screen.

This plugin is fantastic and I really really like it!

There's one change I'd like to see changed, I completely agree with the name of your plugin and it works super well in a lot of contexts, but it's a bit problematic in the Tree Style tab itself.

You see, the name is so long, that It pretty much always gets clipped as you can see here in this screenshot.
https://i.imgur.com/UI9kX37.png

I would argue that the name "Tabs" is more than enough and a tad cleaner.

Pas mal, mais serait-il possible de pouvoir réduire la largeur des onglets comme le faisait les anciennes versions ??

Sometime tab selection shifts by one tab. Otherwise very useful! Prefer to disable animations and fading if you use a lot of tabs to speed up loading.

It's good except a couple of glitches: sometimes plus button doesn't work, sometimes clicking on a tab opens other tab.

@Alexandru Nedelcu -- Any way to restore the window control buttons (e.g., min, max, close)?

TST is a great addon, but the need to continually write your own CSS code to make it behave within reasonable expectations is frustrating. Moreso, the changing css code makes this work-around unreliable; see above. The latest change to FF has rendered the previous solutions obsolete: eliminating the duplicate horizontal tabs using the previous method also eliminates the window controls.