ContactPoint2D.contacts[0].normal returns sometimes returns different value that breaks my game.

Hi,

I have a 2d game where the ball (Player) bounces from obstacles like a laser using Vector2.Reflect.

I tried everything, and through the debugger I noticed that sometimes ContactPoint2D.contacts[0].normal returns a different value.

So, with this function, I reflect the ball:

 void ReflectBall(ContactPoint2D contact, Vector2 ballDirection)
         {
             Vector2 inDirection = Vector2.Reflect(ballDirection, contact.normal);
             float rot = Mathf.Atan2(inDirection.y, inDirection.x) * Mathf.Rad2Deg;
             _transform.eulerAngles = new Vector3(0, 0, rot);
 
         }

And now, using the debugger, I see that the normal of the contact point is x(0.5) y(-0.9)

Now I set the debugger to break only when the normal does not equal that value (0.5, -0.9). And I tested on the same game object, hitting it on the same spot:

Here is the object with it's collider:

http://prntscr.com/e7x0dj

as well its physics components:

http://prntscr.com/e7x0nd

Now here is the OnCollisionEnter function:

  void OnCollisionEnter2D(Collision2D col)
         {
             Vector2 forward = _transform.right;
             // ball hit bound of gamefield, level is going to reset
             if (col.gameObject.layer == LayerMask.NameToLayer(Constants.LayerBounds))
             {
                 shouldResetTransform = true;
                 Reset(false);
             }
 
             //if ball hit on figure
             else
             {                
                 string tag = col.gameObject.tag;
                 if (tag.Equals("Normal") || tag.Equals("Hard") || tag.Equals("NotDisappear"))
                 {
                     ContactPoint2D contact = col.contacts[0];
                     ReflectBall(contact, forward);
                     OnHitResponse(col.gameObject);
                 }
 
             }
         }

OnHitResponse() is a heavy function, but it's called after RefflectBall().

I'd really appreciate any ideas. Thanks :)