Bug: with FaceLostEvent and Head Binding?

If you attempt to add a FaceLostEvent to a headbinding child or the headbinding object itself, the FaceLostEvent never triggers. Does anyone know whats going on here?

Steps to Reproduce
- I have a Eye Glow sprite nested under a head binding object
- Create a script setup on initialize with the following

var faceLostEvent = script.createEvent("FaceLostEvent");
faceLostEvent.bind(function (eventData)
{
print("************Face tracking lost on face 0");
});

- Note that this does not generate the debug message in console when your face leaves the screen.

Thanks!

-Phill