Human playable mode: second players first delta is wrong

[JacobFischer]

It happens in chess, but probably all games for streaming gamelogs.

1. Connect two chess human clients.
2. Have white (the first player) make a move.
3. white player will render correctly
4. black player will not

It appears as if the second player animates the delta "backwards", where the currentState and nextState are reversed, so the move is played back in reverse and it sits in the start position instead of the end.

Any subsequent deltas to that piece are correct though. So it's something with initiation.