I love the extension, it is a must-have to enjoy youtube.
However, it is very broken on mobile right now.
After installing, in fullscreen, the video flips to portrait mode every 20 seconds or so. (Sometimes by itself, sometimes as a reaction to the screen being tapped).
The only way to fix it is to go out of FS or double tap to skip 10 seconds of the video.
It is incredibly annoying and by rating one star my intentions are only for the dev to give the issue the appropriate amount of attention it deserves as I am not the only one who suffers from this problem.
There is an unresolved github thread about it and there are reviews here that mention the same issue.
As soon as it is fixed, I will five it the 5+ starts this amazing extension deserves.

It's not working anymore on youtube.

Youtube has started buffering my videos and sometimes not even loading them, and I've sourced this extension as the problem by testing all my extensions individually. I still give it 5 stars, F**k youtube.

Often gets the full screen orientation wrong when viewing on mobile. It will change the orientation after it auto skips, if you double tap to manually skip, or sometimes even simplely taping the screen to view the time elapsed. A very bizarre and annoying bug but otherwise works fine.

YouTube is unwatchable without this add-on. Sponsored segments being shoved down your throat is insufferable and this removes all of that and more including useless sound segments in music videos.

Не пропускает рекламу

If you ignore the snobby assholes who make nonsense, harmful segments towards small youtubers, it's not half bad.

On Firefox mobile, it breaks youtube player.
Can Skip video but freeze YouTube player.
Like pause button, 10s forward -rewind, seeker ber
Doesn't work