Transform shows in Scene View on Runtime, but not in Camera (also: Vive Trackers)

Hi there,

I am currently working with a Vive Tracker to bring a drawer into Virtual Reality. To adjust the position and rotation of the mounted tracker in relation to the drawer, I took an example script from the Vive Tracker Guidelines (Page 29) and adjusted it slightly so that it now looks like this:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using Valve.VR;
 
 public class Accessory : MonoBehaviour {
 
  
     // Define Offset and Rotation in Unity Editor
     public float dX = 0.0f;
     public float dY = 0.0f;
     public float dZ = 0.0f;
     public float roll = 0.0f;
     public float yaw = 0.0f;
     public float pitch = 0.0f;
 
 
 /*
     // Define Offset and Rotation in Unity Editor
     const float dX = 0.0f;
     const float dY = -0.61f;
     const float dZ = 0.0f;
     const float roll = 0.5f;
     const float yaw = 90.0f;
     const float pitch = 0.3f;
 */
 
       
     // Choose Tracking Device in Editor
     public enum EIndex
     {
         None = -1,
         Hmd = (int)OpenVR.k_unTrackedDeviceIndex_Hmd,
         Device1,
         Device2,
         Device3,
         Device4,
         Device5,
         Device6,
         Device7,
         Device8,
         Device9,
         Device10,
         Device11,
         Device12,
         Device13,
         Device14,
         Device15
     }
     
 
     public EIndex index;
 
     
 
     void Update()
     {
         //Use chosen Tracker
         var i = (int)index;
 
         //Collect delta rotation and displacement between Tracker and Accessory
         Vector3 delta_displacement = new Vector3(dX, dY, dZ);
         Quaternion delta_rotation = Quaternion.Euler(roll, yaw, pitch);
 
         //Get current Tracker pose
         Vector3 tracker_position = SteamVR_Controller.Input(i).transform.pos;
         Quaternion tracker_rotation = SteamVR_Controller.Input(i).transform.rot;
 
         //Transform current Tracker pose to Accessory pose
         GameObject.Find("Accessory").transform.rotation = tracker_rotation * delta_rotation;
         GameObject.Find("Accessory").transform.position = tracker_position + (tracker_rotation * delta_rotation) * delta_displacement;
     }
 }
 

This is supposed correct the stance of the drawer in relation to the vive tracker. Here's the problem: Activating the script changes position and rotation auf the drawer the right way in the Scene Window if I start the Application. The game view and the vive however still show the old transform of the drawer, as if my accessory script had never happened. I never had such a difference between Scene and Game view on runtime. Maybe somebody knows why this is happening? I don't know if it's an issue related to Vive and the trackers or not.

If you need additional info, let me know!

Big thanks in advance, Adrian