inventory bug

say player1 is on comp 1 and starts a LAN world. then player2 joins on comp 2. they save and exit with different inventory for both. player 2 logs on to comp 1 and starts same lan world. player 1 joins on comp 2. player 1 has player 1s inventory. but player 2 has either no inventory or player 1s inventory both times deleting player 2s inventory