I am trying to get my Music \ Artist active playlist to work to my liking. I want it to sort by:
Disc (if multiple discs)

At the moment I have the hierarchy set as follows:
- Album Artist
--- Album / Series

If I add Disc / Season as a third entry something very weird happens:
1. Single disc albums are sorted as:
- Artist name
--- Album name
----- Disc 0
2. Many albums disappear completely

Not sure why this happens but I don't want single disc albums to have a "Disc 0" sub-tree and I definitely don't want albums to disappear

Thanks in advance!