The extension is perfect, the issues I had were from other extension that afected the layout of google apps pages. Once I removed, the Horizon extension works perfect. Lohit, I actualized my post.

I am utterly captivated by this extension, as it restores a sense of charm to the YouTube interface; by stripping away those recommendations and peculiar mixes or playlists, it leaves the entire page feeling elegant. And its seamless compatibility with my other extentions, such as `Enhanced for YouTube`, ensuring the platform is as functional as it is aesthetically pleasing.

Report a bug: when the option to "Hide more from YouTube" under the "Header and Navigator" section is enabled, the comment submission button unfortunately vanishes as well.

COOL