Enabling Substepping in BaseEngine breaks VREditor's UI Interaction

Can still interact with gameworld / game objects

Using HTC Vive Pre - SteamVR 1463781942

1. Add in BaseEngine.ini

   [/Script/Engine.PhysicsSettings]
   bSubstepping=True

OR enable through editor

1. Project Settings -> Physics ->Framerate -> Enable Substepping
2. Restart Editor

1. Enable VREditor, Editor Preferences -> Experimental -> VR -> Enable VR Editing
2. Press "VR" to start VREditor

Results: Traces from the motion controller to VREditor's UI no longer generate hit event. See gif attached