OVRPlayerController dash implementation not working

Hi Oculus staffs,

I used a prefab 'OVRPlayerController' to understand how Oculus Rift and Touch work, but I got the same problem here and it really depressed me. No matter which button or axis I added in script is not working. I've checked the OVRInput.GetActiveController() and OVRInput.GetConnectedControllers() both return 'Touch' which I guess the controllers are connected, meanwhile the OVRInput.GetLocalControllerAcceleration() works fine. Not pretty sure if there's any part that I didn't notice or did wrong.
My environment shown in Unity is Unity v2018.3.12f1, Oculus Utilities v1.32.0, OVRPlugin v1.32.0, SDK v1.36.0.
[Update May 2 2019]
The buttons are functional in exe mode, but why it can't also workable in Unity Editor?

Please help. Thanks!

Code snippet in OVRPlayerController.cs

UpdateMovement()
{
    // ...
    if (OVRInput.Get(OVRInput.Button.Start))
    {
        Debug.Log("Start trigger");
    }
    if (OVRInput.Get(OVRInput.RawButton.Start))
    {
        Debug.Log("Raw Start trigger");
    }
    // ...
}