In releases with multiple mediums by a main artist, we end up with an artist column on one medium if there are featured artists and none on the other, it looks weird. Imho, all mediums should have the main artist if this happen and artist column should be aligned across mediums as well.

Here's an example where it happens...

https://beta.musicbrainz.org/release/a6d23291-4488-44bd-b0bc-3182fe724faf

https://i.imgur.com/4IZ5J7a.jpg

and here's another example...

https://beta.musicbrainz.org/release/48b8135f-6a4a-495d-bee4-431da9755746

https://i.imgur.com/kp0mOIV.jpg