This script stops new VR poses from being applied when Unity editor is paused. It fixes frame debugger. Add it to camera and controllers, and any other tracked objects.

VRFrameDebuggerFix.cs

using UnityEngine;

#if UNITY_EDITOR
using Valve.VR;
using UnityEditor;
#endif

// This script stops new VR poses from being applied when Unity editor is paused. 
// It fixes frame debugger. Add it to camera and controllers, and any other tracked objects.

public class VRFrameDebuggerFix : MonoBehaviour
{
#if UNITY_EDITOR

    private Vector3 position;
    private Quaternion rotation;

    private void Start()
    {
        EditorApplication.pauseStateChanged += OnPauseStateChanged;

        SteamVR_Events.NewPosesApplied.Listen(OnNewPosesApplied);
    }

    private void OnNewPosesApplied()
    {
        if (EditorApplication.isPaused)
        {
            transform.SetPositionAndRotation(position, rotation);
        }
    }

    private void OnPauseStateChanged(PauseState pauseState)
    {
        if (pauseState == PauseState.Paused)
        {
            position = transform.position;
            rotation = transform.rotation;
        }
    }

    private void OnDestroy()
    {
        EditorApplication.pauseStateChanged -= OnPauseStateChanged;

        SteamVR_Events.NewPosesApplied.RemoveListener(OnNewPosesApplied);
    }

#endif
}