Hand tracking resets hand position if tracking lost causing weird visual effects

[Ledzz]

If the tracking is lost, hands are reset to (0, 0, 0) position.

To reproduce:

• Go to Hands Tracking Demo: https://codesandbox.io/s/gczkp
• Move your hand behind your head, so it loses tracking
• See downwards

Actual result:
You see a hand model in idle state in (0,0,0) coordinates (where you stand)

Expected result:
Hand model is hidden

My idea to fix it was to find parent element (armature itself) and if its position is strictly (0,0,0) just hide the hand.
But I find this check too loose: maybe the coordinates will be not exacly 0.
Do you have any ideas?

[CodyJasonBennett]

I believe events are dispatched when the input method changes. Will have to see if that's true for hands in this case or only if controllers are then activated.

[Ledzz]

I've checked, events are dispatched when the tracking is lost. I'll try to fix it tomorrow.