This is a very good addon, but there is a missing thing which is the following:
I do not want the appearance of the hierarchy between the tabs to be in the left side neither the right side

I want the hierarchy to appear in the top side, I mean in the original tab bar of Firefox, I mean like what was in the old versions, before converting the addon to the type of web extension
I mean
like what Piro have written in his website about this addon that this addon Shows the tab bar as a tree of tabs.

but I do not find this option in the preferences like before

I hope Piro (piro_or) update the addon with this feature

Sideberry is better and doesn't ask you to install more extensions for very simple additional features... On the other hand, this one looks better... Decisions, Decisions.

picture in firefox theme will be stretched as this addon's background, looks strange, hope for fix in furter updates.

整理成树状标签的功能确实很好用，但是将其调整为树状视角时，会出现标签页被被重新打开的情况，这会导致历史记录被重复记录。

j'adore le concept en arborescence, car ma pensée intuitive fonctionne de cette manière. par contre ce serait tellement bien de pouvoir choisir des couleurs pour s'y repérer comme dans edge. Je vais pas utiliser un navigateur microsoft pour ça, mais j'en connais certains qui ce sont fourvoyé juste pour leur super fonctionnalité d'organisation des onglet lateraux. en tout cas merci pour cette appli qui est dejà top!

I am extremely pleased with this add-on. I have one bigger complaint that might be worth looking into - it works well on all websites except youtube. When I have the sidebar open, it cuts off part of the youtube website - for example in opened video, I can't view the first letter of the title or profile pictures of commenters.

I would like to make one suggestion for improvement:It doesn't make sense that among the links opened in a newly opened tab, the last opened link is automatically listed at the end. Because the last page you open is definitely the one you want to see most, and this extension automatically takes the last page you open at the end, so it's a step of moving the mouse. The correct way to open a link is to open it near the "parent" tab, which is to the right of the "parent" tab. The first link opened from the "parent" tab should be at the end, which is much better.
我希望能提一个意见改进：在一个新打开的标签中打开的链接中，最后打开的链接会自动排列在末尾，这是不合理的。因为最后打开的页面肯定是自己最想看到的，而这个扩展却自动把最后打开的页面拍在最后面，这样多了一步移动鼠标的动作。正确的链接打开的方式应该是在靠近“父”标签页打开，就是在“父”标签页右边打开。而最先从“父”标签页打开的链接应该拍在最末尾，这种方式打开要好的多。

marvelous

google検索上で画像を直接開くとツリータブがフリーズしてしまいます。

Ogólnie bardzo dobre rozszerzenie, jednak ma jedną wadę: zajmuje sporo miejsca w ui, poza tym OK

I can't send the tabs thru the Tree Style Tab on the left regardless if it's per tabs or per tree. When I select the tabs, I need to send the tabs through the tab menu at the top (ergo by right clicking the tabs at the top not the tabs on the tree style). Please fix. Despite this, it's an amazing plug-in.

Je trouve que ça marche mieux sur mac que sur windows mais c'est très utile.

I have been using Tree style tabs for over 10 years. It is an indispensable tool.

With recent updates, the X to close a tab is now on the left and not the right and the > to expand a stacked tab is now on the left.

I'm not sure why the change, but it's confusing for legacy users. It would be nice to revert it, or at least give us an option. Thanks!