Snapshot 13w01a

Pigs constantly jumping, when player control them on half slabs and stairs.

When scaling a map with paper, shift-clicking on it won't apply the correct scale level.

Signs light up when mousing over creative inventory slots

Droppers, Dispensers and Pistons activate when blocks are providing power diagonally or two blocks above

Blocks/entities above beds push players out of bed

Piston extended and retracted at the same time

Visual glitch on retracting piston

Ghost boats

Villagers ignore data tags in trading

Arrows first bounce back then appear at correct location

Anvils sometimes destroy items when falling on them even if they aren't placed successfully

Mobs not realizing they killed their attacker and trying to attack empty space

Duplicating/deleting blocks

Sky/lighting doesn't get darker during a thunderstorm

Dispenser and Dropper shooting out when updated

Extreme Performance Issues

Graphical Piston Glitch

Cannot move backwards in Books while writing / Cannot copy anything from the book

Trying to walk from a block with a collision box shorter than 1 block to another block that is also shorter, causes you to momentarily glitch into the ground

Infinite rail duplication glitch

Retracting piston shows ghost hitbox of technical block

X-Ray by standing inside TNT/Glowstone/Block of Redstone/Leaves (fast)

Double sound for fall damage

If you sneak, buckets will place water/lava/lily pads at the position you would point at if you wouldn't sneak.

Mutiplayer: Repairing Tools with an Anvil doesn't work

FPS is VERY unreliable in singleplayer

Sneaking on shorter than full blocks (chests, enchantment table...) will make you fall nonetheless

Hitbox of Anvil not proportional

Players can place and remove arbitrary blocks in Adventure mode, breaking pre-1.4.2 maps

Suffocation/jittering/stuck when spawning in a newly created world

Pigs constantly jumping, when player control them on half slabs and stairs.

When scaling a map with paper, shift-clicking on it won't apply the correct scale level.

Signs light up when mousing over creative inventory slots

Droppers, Dispensers and Pistons activate when blocks are providing power diagonally or two blocks above

Blocks/entities above beds push players out of bed

Piston extended and retracted at the same time

Visual glitch on retracting piston

Ghost boats

Villagers ignore data tags in trading

Arrows first bounce back then appear at correct location

Anvils sometimes destroy items when falling on them even if they aren't placed successfully

Mobs not realizing they killed their attacker and trying to attack empty space

Duplicating/deleting blocks

Sky/lighting doesn't get darker during a thunderstorm

Dispenser and Dropper shooting out when updated

Extreme Performance Issues

Graphical Piston Glitch

Cannot move backwards in Books while writing / Cannot copy anything from the book

Trying to walk from a block with a collision box shorter than 1 block to another block that is also shorter, causes you to momentarily glitch into the ground

Infinite rail duplication glitch

Retracting piston shows ghost hitbox of technical block

X-Ray by standing inside TNT/Glowstone/Block of Redstone/Leaves (fast)

Double sound for fall damage

If you sneak, buckets will place water/lava/lily pads at the position you would point at if you wouldn't sneak.

Mutiplayer: Repairing Tools with an Anvil doesn't work

FPS is VERY unreliable in singleplayer

Sneaking on shorter than full blocks (chests, enchantment table...) will make you fall nonetheless

Hitbox of Anvil not proportional

Players can place and remove arbitrary blocks in Adventure mode, breaking pre-1.4.2 maps

Suffocation/jittering/stuck when spawning in a newly created world