Affects Version/s: Minecraft 14w07a
Fix Version/s: None
Environment:Win 7, latest Java
When you mine blocks that have at least one solid or nonsolid block above them, the resulting item has a chance of flying up through the block.
go into a new world.
Find a cave near the surface or even a tree
mine the blocks above you
After a while, come outside and you should see items littering the ground above your cave.