It works as intended, sort of - if you haven't had to suffer the re-design (which I hadn't up until this extension) and just want some of the features (for me, the return of the "up next" in the top right), the extension forces you into a re-design anyway, even with every single feature disabled. It works well enough, apart from the visuals, but I'm kinda bummed that there's no re-design opt-out for this extension. I was hoping this would let me get that autoplay thing back without having to accept the redesign, but like many other users I'm sure I'll get used to it eventually :)