New Bugs:
Creepers can make noises of other mobs.
Sometimes it rains in snow biomes.
Repetitively putting smeltable items in the furnace counts as a crafting statistic.
Achievements only work in SMP if you have already completed first achievement in Single Player.
Achievements disappear when you close and re-open the game.
FPS counter shows Chunk Updates instead of FPS, usually while generating new chunks.
The game will crash if Detector Rails are placed beside normal rails.
A crash will also occur if a normal rail is placed next to a Detector Rail that is connected to another rail.
Blocks can't be placed on snow.
If you change Advanced OpenGL to on and then back again, giant holes will appear that you can see through.
Jumping off a fence in SMP triggers an anti-flight kick.
Rain will fall through transparent blocks and stairs, acting as if there is no block there.
When hitting a grass block the destroying animation is darker on the side than the animation on top of the grass block, though only on fancy graphics.
Flowing water no longer pushes empty minecarts that fall into it.
GUI: create new world input boxes misaligned under small and normal settings.
Sometimes you might not get an achievement even if you do what it requires to get. This can usually be fixed by doing it in another world.
Locked Chest is once again obtainable through inventory editing or SMP /give commands. The chests can be placed and destroyed, but no longer show the April Fools' Day menu. When right-clicked, a locked chest will disappear after a delay. (SMP only?)
In Singleplayer, game resumes when 'Achievements' is clicked on the pause menu, instead of remaining paused.
Riding in a minecart from the south into a corner going from north to west (so it's not connected to the current track) will crash the game. Possibly also true for other directions, yet if you're going in the same corner coming from the east, it will work as usual.
Burning animation on furnaces may remain after done smelting.
Weather ambience will stop playing while using fast graphics.
Destroying a pine or birch sapling releases the particles of a 'normal' sapling.
