But it doesn't happen every time, right? I stumbled upon this in some other cases, but unfortunately it's very rare for me, so I'm still waiting for an opportunity to take a good look at it.
I'll try, but enlarging it vertically is probably all I can do.
If Tracker is too slow with extracting the image, OMP doesn't wait for it and leaves the placeholder image. However, as soon as Tracker is finished and you change a song, the proper art should be there. If that's not the case, I don't know what's going on.
This would require a karaoke-like format for lyrics. I think it's too much hassle for just a few songs, as those files are much harder to find.