Night vision potion effect under bedrock level will give full darkness

Drinking milk with effect 9 (Nausea) will give nether portal effect

Igniting TNT with redstone fails

Slowness effect with /effect do weird stuff

Picking up burning furnace block in creative has wrong texture

Sprinting and breaking particles of piston arms use same particles as piston eventhough there no stone on the arms

Sugar Canes can be placed underwater if there is a hole right next to it (and water in the hole)

Anvils have damage on any mobs, but if the mob standing on a half block (any kind of slabs) they get damage, but the anvil breaks

Anvils falling don't have ANY kind of affect on bats

Hills/lakes/rivers are cutted off by chunks

Can't use functions, such as 2nd player view ( f5) in windows 7.

World Edit Bug ( Piston breaking all type of blocks, even if it is bedrock, but don't drop anything)

Mobs trapped in leaves, mobs spawning in leaves in jungle biomes, and they been trapped to their spawn point

Can't connect to LAN world

Never Loading world, chunks are not loading when I logged out when I came back from the nether.