Greasy Fork is available in English.
Watch page description below the video with proper open/close toggle, instead of a side bar.
< YouTube - Proper Descriptionについてのフィードバック
I'm also using that extension and I see no such thing.
Are you sure it's not caused by another script?
This script is amazing and works great. Thank you so much!!! Unfortunately it is a bit incompatible with Return Youtube dislike, the like/dislike ratio bar appears in a weird place (to the right of the "..." button). However, this is a minor issue.