I think it was the default OSMC skin. Is the old one still available?
Also, The video is jerky now, and wasn’t under the previous version.
I was perfectly happy with the old version while using as a set-top box (apart from no ability to delete stuff after watching it. As delivered if I’d tried OSMC today for the first time rather than when I did (a few months ago) I would have deleted it off my Pi3 pretty quickly and gone with some other option. The menu navigation is less intuitive, there’s a 3 second blank screen when loading recorded video, and same when stopping, and the jerky video.
Just let me downgrade to 16 again so I can be happy.