(I am not aware of how to report bugs any other way.)
Explained pretty well by title but I’ll go into more detail.

Basically earlyer today I was trying to make a cutdown version of my favorites which is 500+ tracks long so I made a smaller version using the desktop app so I didnt have to download the full 500+ songs but when I tried to download it. It would just start and stop instantly with no download so I tried again several times and it still didn’t work so I made a playlist on the mobile app and that downloaded to my watch first try.

Please Fix.