Problem with moving the platform.

Hey. I have a problem with the script responsible for moving the platform. When a player enters the platform, he changes his shape. What should the ball do not change its shape?

Film:

My script:
PlayerMove:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class PlayerMove : MonoBehaviour {
6.  
7.     void Update()
8.     {
9.         Rigidbody rigidbody = transform.GetComponent<Rigidbody>();
10.         float velocity = 2f;
11.  
12.         if ((Input.GetKey(KeyCode.UpArrow)) || (Input.GetKey(KeyCode.W)))
13.         {
14.             rigidbody.AddTorque(-Vector3.forward * velocity);
15.         }
16.  
17.         if ((Input.GetKey(KeyCode.DownArrow)) || (Input.GetKey(KeyCode.S)))
18.         {
19.             rigidbody.AddTorque(Vector3.forward * velocity);
20.         }
21.  
22.         if ((Input.GetKey(KeyCode.LeftArrow)) || (Input.GetKey(KeyCode.A)))
23.         {
24.             rigidbody.AddTorque(-Vector3.left * velocity);
25.         }
26.  
27.         if ((Input.GetKey(KeyCode.RightArrow)) || (Input.GetKey(KeyCode.D)))
28.         {
29.             rigidbody.AddTorque(Vector3.left * velocity);
30.         }
31.     }
32. }
33.  

PlatformLeftRight

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class PlatformLeftRight : MonoBehaviour {
6.  
7.     public GameObject player;
8.  
9.     private void OnTriggerEnter(Collider other)
10.     {
11.         if (other.gameObject == player)
12.         {
13.             player.transform.parent = transform;
14.         }
15.     }
16.     private void OnTriggerExit(Collider other)
17.     {
18.         if (other.gameObject == player)
19.         {
20.             player.transform.parent = null;
21.         }
22.     }
23. }
24.  

 

Ummm i think the player is scaling to the platform.