Block duplication

When you go into your world as the guest on LAN Multiplayer, and put a few blocks in your inventory hotbar, then tap them, them disconnect and go back on, you will have 200 (99+) of that item in the same stack, even if it is a tool/weapon.

This happens with iron, gold, lapis lazuli, swords, pickaxes, sticks, bows, arrows, diamond blocks, gold blocks, shovels, sugarcane, cake, milk, wheat, steak and apples

EDIT: Was fixed in 0.8.1