"AR Foundation camera distance, object looses its position, but unity position is in place" (780434)

Unity Engine
1

Very Simple case :

Very Simple AR scene,
You put a cube in a scene in front of you,
debug.log cube position and rotation, build and run,
After build object is in place, log reads its position its ok,
then you cover camera,
everything freezes, you rotate the device somewhere else then the object looses its position
debug.log prints that it is the same position and rotation, it seems that skybox itself rotates
when you cover up camera, how to know if an object has lost its position?
How to know if an object is in a different position or a
position is replaced if the position of the object is not really replaced in unity?
I need to notify users to come back to the initial position to see AR objects once again.
Thank you!!

Paul.

2

found it!
ARSession.cs

switch (subsystem.trackingState) {
case TrackingState.None:
case TrackingState.Limited:
Debug.Log (“NOT TRACKING!!!”);
state = ARSessionState.SessionInitializing;
break;
case TrackingState.Tracking:
state = ARSessionState.SessionTracking;
break;
}

3

But still cant find where i can log values when an object is relocated to a different position