Nice

Perfect Extension, there needs to be a"Facebook Redux" Add on.

Yeah it used to be nicely separated in sections like "recommended for you", "popular in your country" or other topics. There is no grouping anymore, just an endless stream of thumbnails (in 6 columns, admittedly). Also the side panel used to be closed/minimised by default. The only thing that changed is that I updated the browser (and add-ons).

Perfect

and for Firefox 2.0 ????

This is a good extension but when i try to change the logo on Firefox 56 it just dosen't work. Why!? Also please add more minor old features, like the like and dislike button.

This is the best extension for recreate the old gorgeous YouTube design, with a lot of extras and a lot of updates to improve it.
If I could I would donate to him for his great work :)

Returned 2015-2016 experience =)

Excellent add-on. Unfortunately, it doesn't save settings (at least in private windows that is). I'm using FF portable, but I don't think that's the issue. If this gets fixed, it would be excellent, it just resets the settings on browser restart every time when you use private windows by default. I haven't tried regular windows.

could you fix these empty spaces when using extra layout changes? http://prntscr.com/11cnmo3
or otherwise remove channel's avatar pictures on home page without extra changes?
25.04 Appreciate the implemented changes.

Very good extension. But one problem has appeared recently: the drop down menu is trying to display the options in a wider format than the menu allows, so half the menu is cut off and inaccessible. I've turned each of my other extensions off individually and checked to see if one of them was interfering, but nothing worked. Here's a link to an image of what the drop down menu is doing.
https://ibb.co/kg0jkHm

Its decent enough, but it WILL NOT SAVE the number of videos in the main youtube screen. I set it to five, and it always defaults to 6, no matter how many times i reinstall the addon, or restart firefox. So just be aware it does have its issues.

Well,
I gave a try to this extension, hoping to have the good experience of
old YouTube.
However, other than some visual changes, i didn't noticed a difference
in performance. YouTube still sucks the same..
Slow loading with high cpu & memory rates, 2-3 sec to go full screen
and vice versa, showing black during this transition, etc etc..
There is also something very irritating: it doesn't retain its settings. If i
close all YT pages and later on i go again on a YT page, i find all settings
to have been reset to defaults.
I'm afraid we have to say bye bye to old, good YouTube. For ever..
The exact same as new Facebook.
It looks like they compete each other, which one of the 2 will be the worst..

Works amazing! It's really nostalgic seeing YouTube without all the ugly oversized rounded icons again!

I do have one feature request (If possible): Could you add an option to have the "Your Channel" button on the left side of the screen like it used to be?
Edit: Oh well, that's alright. Still a great extension!

Hey love the extension been just what I needed to make youtube usable with the new theme. Small bug that just started today the cog wheel, full screen option and subtitle option has been disappearing. Sometimes it doesn't disappear right away and other times it does I thought it was caused by going into full screen mode then back out but it just happened to a video that I never went into full screen mode with. It just started happening today so it might have something to do with your latest update. Hope you can fix this soon. https://imgur.com/a/nFWS0wI
EDIT: It works now very good job! EDIT of the EDIT seems to work for a while then does the same thing that it was doing in the picture I linked. But going fullscreen then out fixes it for a while.

very good! !! !!
The old youtube layout so far has a high degree of perfection and is wonderful.
I am very satisfied with the use of the pillar box.

One suggestion, but I'd be happy if youtube menus could always be open on the same page.
We also need to fix an issue where the end of the progress bar is choppy when using a small video player.

December 24: Addendum

It is said that it has been fixed, but it has not been fixed as of 12/24.
4/5 will be cut off like the attached image.

https://i.imgur.com/SeGyhVg.png

December 26: Addendum

Thanks for the quick fix of the progress bar.

I am facing a new problem.
This is a serious problem for me.

From version 1.3.5 or later, you have to wait up to 10 seconds to load the next video.
No symptom was seen in previous versions.

It may be displayed immediately.
As for my symptom, the display from the top page is always awaited.
1080P → 1080P etc. will be displayed immediately.
1080P → 480P tends to occur, but the cause has not been identified.

https://i.imgur.com/30IxUeU.png

January 12: Addendum

All the problems I had in Ver1.6.3 have been cleared.

Thank you.
I appreciate it very much.