[Rouzax]

Since Picard is the tagging software promoted by MusicBrainz themselves for use with their own database, if Kodi is to feature MusicBrainz support, it needs to also support the tags that Picard will add/modify. Otherwise, why add that support to begin with?

There's also a knock-on effect I've witnessed that now "Download Additional Information during scans & Updates" is sending the wrong MBIDs to fanart.tv which not only lengthens the scanning process considerably, but is also going to cause a lot more unwanted traffic for Fanart.tv because Kodi will re-attempt the request on each artist/album multiple times and fail because the wrong info is being sent.

So yes, I think this needs fixing.

If people don't want to use Picard, or MusicBrainz information in general, then Kodi needs to have the ability to ignore/disable support for MusicBrainz tags. Otherwise this issue, and others like it are going to keep cropping up.

Couldn't agree more.
Kodi already uses MBID's today, then it should also use the other tags otherwise it is a half implementation.