Dupe Bug

Dupe Bugs!

I Found 2 Dupe bugs

repro steps:

1. : Place a chest, lay in 1 item ( no matter what item ) , close the chest menu as fast as possible, destroy 5 sand ( "timer" ) , then as fast as possible ALT F4, then go in the world and you have the item in the chest and in the inventory ( with more than 1 item stacked it also works )
2. Place walls right, left and behind you ( solid block, 3 blocks high ) then place 3 sand over yourself ( on the third block of the wall, 3 blocks sand ( or other blocks, but they must have gravity ) , then go a outside ( but you must come in again later ) , drop a item ( doesnt matter what item ) , then go in again and press ALT F4 , then come again in the world and then you have ( if you made all correct and it worked ( sometimes it doesnt work ) ) the item dropped on the floor and in the inventory