Behavior on x/y enabled Binding Not Fails

I want a Behavior to only apply an animation when the user releases the mouse. I enable the behaviors via

enabled: (mouseArea.pressed === false)

But this does not work unless I have some other item evaluate the enabled property of the behavior.

The attached example is a joystick that should animate back to the start point after releasing the mouse. I cannot make this work without the item with id "wtf".

This works as expected without the bogus item on iOS.