gamecrashed when broke the opend Ender chest by others.

first, Stuff my items into the ender chest.
next, others open the ender chest.
next, break the ender chest during the other player open.
and then if, autosave started game crashed, and my items are lost.

Do this within 10 seconds.

 

additional information:
the field have some redstone systems and  villagers(30~50?) and decolated.

small laggy.