I started this post last night, but then it seemed to work so I thought I was going crazy. Now it doesn't seem to work, so maybe I am going crazy.
I've got a playlist in YouTube music with about 250 tracks. If I open that playlist and hit play or shuffle, it picks 100 of those tracks and plays them (obviously the first 100 if I hit play), and then stops. This seems a bit, shit.
Except it worked last night, I could go onto Up Next and scroll and scroll until I got to the Autoplay option.
Oh, casting breaks it, if I'm casting when I hit play/shuffle it only picks 100 tracks, if I hit play/shuffle first, then start casting, it works.
Actually, that's a lie, I have to hit play/shuffle, go into Up Next, scroll all the way to the bottom so that it generates the whole list, then start casting, if I start casting without scrolling, then when I hit the bottom of the first batch of Up Next (25 tracks) it doesn't add any more at all.