XR debugger window does NOT detect button press

I created a project in Unity 2019.3.15f1 with HDRP render pipeline using Oculus Rift. I have incorporated XR Management PlugIn. I have a UI button in my project. To elaborate, when I press the button I move on to the next scene. The button press works fine in Unity 2018.2.15f1 however, it doesnt work in 2019.3.15f1. When I check in XR Debugger Window. I see that Touch controller is detected but button press or grip is not detected, the values do not change. I tried the XR example from GITHUB and it works fine.

https://github.com/Unity-Technologies/XR-Interaction-Toolkit-Examples

I have the following questions:

1) Do I need to change something in Input Manager (Project Settings)?

2) Do I need to add customise any scripts as a part of controllers?