In my library there are some albums that have a different art for every track. The art for each track is within their tags, and the folder also contains a cover.png, the album art. The first track of the album also has that same album art in its tags.
The problem: in the album art grid WACUP doesn't load the cover.png file and instead reads the tags of a random track from the album and uses that instead. see attachment.
I think the fix would be to prioritize using explicit album art files (cover, folder, front image files) over track tags for the library view, but to still use the track tags for the currently playing album art display.
If an explicit album art file doesn't exist in the folder, WACUP should only use the first track to get the artwork from.
