Problem with 1st person camera rotation after jumping on a platform

I have 1st person rigidbody player controller from standart unity assets. I made moving and rotating platform as a kinematic rigidbody with simple script.

     // Actual platform movement
     void Update() {
         transform.Translate(moveSpeed * Time.deltaTime, space);
     }
 
     // Platform rotation
     void FixedUpdate () {
         Quaternion deltaRotation = Quaternion.Euler(rotationSpeed * Time.deltaTime);
         rb.MoveRotation(rb.rotation * deltaRotation);
     }

Also to let player stand on a platform I made him a child of platform after jumping on it. The problem is that after jumping on the platform players camera rotates (because of the existing platform rotation). To fix that I tried to add into player controller script:

 void OnCollisionEnter (Collision hit) { 
             if (hit.gameObject.tag == "Platform") {
                 Debug.Log (transform.rotation.eulerAngles + "\n");
                 transform.Rotate(hit.transform.rotation.eulerAngles*(-1));
                 Debug.Log (transform.rotation.eulerAngles + "\n");
                 transform.parent = hit.transform; 
                 Debug.Log (transform.rotation.eulerAngles + "\n");
             }
         }

But this didn't solve the problem. Log shows that rotation was succesfull, but in fact camera rotates the same as it was before.