Some Genres are incorrectly attributed, or missing, from artists

Not certain this counts as a bug, but on a few artists now, I've seen genres that are not related to an artist, but the artist has been classed within that genre anyway, or vice versa, and artist will have only one, loosely related genre, without the main genre they're known for being attributed to them.

An example of this is the artist “Poppy”, who is mainly known for her rock and metal music, and yet is only attributed to pop.