Inconsistent order of track artists

[jaedb]

Fetch a track (eg spotify:track:1tRoJfwQ2upkIVEVKkuPcT) from the Spotify HTTP API and the artist order differs from that returned when requesting the same track via the Mopidy-Spotify backend.

To replicate:

1. Get the track using the Spotify Console (link).
2. Observe the order of artists: ODESZA, WYNNE, Mansionair.
3. Get the track from Mopidy-Spotify (I use Settings > Debug tool in Mopidy-Iris), eg library.lookup {"uri":"spotify:track:1tRoJfwQ2upkIVEVKkuPcT"}.
4. Notice the order of artists differs: WYNNE, Mansionair, ODESZA.

Are there any ordering rules applied by Mopidy-Spotify when the array of artists is returned? Or perhaps caching of artists affects the return? Let me know if I can do any further testing to help identify the issue.

[kingosticks]

Nope, no ordering by us. They use two different backends at Spotify. I think the Web API orders some things by (worldwide) popularity, is that what you see? Not sure what libspotify's backend does but it's not necessarily the same.