I'm having some trouble with the "By Genre" sorting from the Home screen. My music will show up, but a portion of my library is misclassified. More specifically, in the genre selection dropdown, I see values I don't expect. For example, in the below screenshot you can see ID3v1 genre IDs, and in particular these four albums being sorted as genre "7":

When I open albums directly the genre is correct. For example, this album is one sorted incorrectly (genre "7") in the previous screenshot. It shows the genre I'd expect ("Hip-Hop/Rap") from the album page:

Further, if I click Edit Tags for this album, I also see the correct genre there:

My first guess was that the "By Genre" page is using the genre value from ID3v1 tags, while everything else is using ID3v2. That doesn't seem to be the case - I completely deleted all tag data (both ID3v1 and ID3v2) from the album above, manually re-entered the info, rescanned my library, and it still shows up in genre = "7". I have no idea where this value is coming from!
I'm currently running Subsonic 5.2, but I've been having this problem since at least 4.9. Any help or ideas? I searched and couldn't find any issues similar to this; my apologies if I missed an answer somewhere.