Bug with XRay, used compost piston and lever.

1. About the bug - I found a bug with Xray on the newest release and snapshot, it lies in the fact that when the pistons push two compost boxes from above and below, then you see it as in spectator mode!
2. How to fix - You need to make sure that when the player does what is written above, so that these composites simply become in the player, but he does not see anything, or that any blocks do not move into the player!