Added a new animation clip to my animator and now I can't look up and down in game

I added a new anamation clip "ADS" to my animator. I'm having a problem because it seems that when this clip exists in my animator, it doesn't let me look up or down in the game, but I can still look side to side. This blows my mind because the animation is not even playing in the animator (and it doesn't even have a transition attached to it), but it still prevents my fps camera from being able to look up or down.

I have noticed however that while the game is running if I toggle the checkbox "Write Defaults" or "Foot IK" for the animation, the game updates my camera's Y position for a frame and then doesn't let me move it right after.