Minecraft Wiki:Issues/13w01a

Crashing/system
Bugs

Gameplay
Bugs

Annoyances

a Nether quartz ore doesn't stay lit like Netherack.

World generator
Bugs

Annoyances

Mobs/NPCs
Bugs

Annoyances When You make a iron golem only the top block of iron is used the rest can be mined back

Graphical/lighting
Bugs

Annoyances

Sounds
Bugs

Annoyances

Menus
Bugs

Annoyances

In-game interfaces/HUD
Bugs

Annoyances

a Hoppers immediately pull items out of the inventory above them. This makes auto-smelting systems much harder. Maybe make them only pull out of the inventory on a redstone signal/only pull out of the "finished" side, not the top/bottom? EDIT: The also will apparently put thing INTO the side...

a Hoppers will not put music discs into jukeboxes, nor will they put things into ender chests. Not putting things into enchantment tables, anvils, or crafting tables make sense, but those would be nice features. Also, sometimes coal will go into the top and ores the bottom of a furnace through use of the hopper.

Chat/commands
Bugs

Annoyances

Language/text files
Bugs

Annoyances