Thanks to help from a fellow game developer, Iseeicy (Go check out his game Dreams of Being, one of my favorite Meta Game Jam entries: https://iseeicy.itch.io/dreams-of-being), I was able to fix the mouse issues! To celebrate, I've added a custom cursor to the game. Along with those things, here's the full changelog:

• Fixed the mouse issue!
• Added a new custom cursor.
• Bully is now easier to be caught Bullying by the Principal.
• Gave Baldi a tiny speed boost.
• Fixed Principal punishing you for running when getting pushed by 1st Prize or Gotta Sweep while holding the run button.
• Added a couple more yellow doors.
• Baldi now hears exits when they disappear.
• Made Baldi speed up more slowly in endless mode.

Thanks, and enjoy!