After adding VR mode my touch event not working at all in my mobile

Questions
12

https://playground.babylonjs.com/#UQ2AYT#4

window.addEventListener(“touchmove”, function(evt){
vrHelper.deviceOrientationCamera.cameraRotation.x +=0.1;
}, false);

the pointer is getting reset back to original position when i run in mobile chrome webbrowser. why ?