Unexpected behavior Use Head Navigation in Face Tracking app

[Colorfingers]

From the Face App when you turn on "Use Head Navigation" in Desktop mode you instantly start moving at an accelerated rate. You move in the direction your face is looking. When you turn off "Use Head Navigation" the view spins in a downward motion until you end up under your avatar and are looking up. There does not seem to be a way to resolve it but restart your interface.