Hey Sean, so I tried starting up a fresh 4.11 Preview 7 project and do have the same error. This occurs when I set the player controller to show the mouse and in the Project Settings → Input: Set Use mouse for Touch = True
The main problem still seems to come from the InputTouch event where the location works great if you click slowly. If you are trying to click at a faster rate or double click it will set the location to (-1,-1,0).
Other nodes which get the mouse or touch location work fine still, so again, it does have a work around to use those instead.
I’ve zipped up the new and clean project and have it here if you’d like to see my setup:
https://drive.google.com/file/d/0B3EStrU6T3QBMVdfSzJGRGFiNkk/view?usp=sharing