I noticed that in multiplayer mode, the orientation of ImmersiveAircraft's airplane model is tied to the piloting player's head direction, yet the pilot's first-person view is not. This significantly harms the game's realism and logical consistency.（1.20.1Forge,Mohist)

I need a screenshot here. The players yaw is tied to the aircraft, and the head yaw should not be tied to anything

There is so much to say that I can't just use a screenshot or a short video. So I uploaded it to YouTube for you to see.
Youtube

I think the problem may be from the mod: https://github.com/Exopandora/shouldersurfing , which provides a perspective that allows the camera to not be in the same line as the player's head