Inconsistent presentation (storage?) of artist-memberof-group relations

artist
member
Tags: #<Tag:0x00007fe3d6c2e5b8> #<Tag:0x00007fe3d6c2e478>

#1

If you look at the members of the group Manfred Mann’s Earth Band
https://musicbrainz.org/artist/83e9c775-84ea-4cf6-abdf-b9ffa8c3d060/relationships

the UI presentation seems to be inconsistent.

Why has Manfred Mann a kind of joined list of instruments and vocals and the other members not.

I entered several entries for another artist of another band within one commit and one relation but he got the presentation unjoined, too.

Is this a bug or feature?