I accidentally saved over the files that were glitching out, but I tried to recreate the bug with the song cheat in story mode, and it doesn't seem to be happening again. I also tried to recreate it in Open Mode (no cheats), but still nothing. Maybe it was just a very specific thing? I'll try to see if I can get it to happen again, since I remember most the things I did in that save. I'm so sorry about that. ;_;