While on a horse with leawind's third person and horse combat controls, the players rotation is locked. So if they get on a horse while facing north, they will always face north until they get off the horse, no matter what direction the camera is looking at

I am using horse combat controls version 1.20.1-1.0.3 and leawind's third person version 2.2.0 for forge 1.20.1

I saw this while testing and wasn't sure if it was a bug or not because other third person mods work like that sometimes. You can force your player to rotate by punching until I get around to fixing it.