Unity 2019.3 / 1.41 : OVRInput not working for the Quest

Hi,

Unity 2019.3.9b
Oculus Integration 1.41

I have a problem, i just bought an Oculus Quest and start (trying to start) developing on it with Unity (that i know well).
I create just a simple scene with OVRPlayerController and a CustomHandLeft and CustomHandRight parenting to the Left/RightHandAnchor. OVRManager is on and manifest is ok too (removed and created from Oculus/Tools menu in Unity)

When i build and deploy in the Quest, i see my hand but when i press the grab button for exemple, the hand doesn't "flex" (make a fist). It seems that input doesn't work.
In fact, OVRInput doesn't work at all...
When i test OVRInput.Get(OVRInput.Button.One, OVRInput.Controller.RTouch) it always return false.
When i call OVRInput.GetActiveController() or OVRInput.GetConnectedControllers(), it always return "NONE".

Avatar ID and App ID is correctly setup. 

I spent 2 days on this and it start to drive me crazy.......

EDIT : Input.GetButtonDown seems to work just fine... But why OVRInput doesn't work? 
EDIT 2 : I tried with Unity 2018.4.12f1 too... same result.