I think this applies to pro bandcamp pages where they use their own URL rather than bandcamp.com . Examples would be.. https://lobstertheremin.com/track/malfunction https://ghettotraxx.com/track/a3-sonic-measurements https://shop.cpurecords.net/track/verd-mar etc... Attempting to add these tracks to a list doesn't resolve to anything, you just get a spinning star and nothing happens.