It works fine, but sometimes the context menu disappears. Refreshing Youtube pages often does not restore it, and instead a full restart of the browser is required. Other than that everything's gravy.

(note: this review is heavily altered from its original state, it was initially a two-star complaining about the context menu disappearance, but now that it's come back after a fix on my end I figured it was unfair to leave the review and rating as is)

EDIT: Never mind again, back to two stars as the context menu no longer appears on videos in the "recommended" sidebar on a video page despite it appearing on videos in my history. Please fix this.