Minecraft wiki entry for Development_versions, associated text: Fixed two crashes in furnaces
Fixed an infinite loop (the game would hang) when loading a world with a fully empty column
The player can now interact with all blocks again
Grass now correctly spreads to dirt blocks again
Immersive mode should now work correctly
Fixed wolves not remembering their sit state
Leaves don't turn to wood anymore
Furnaces now show the progress bar when moving items again
Now using the correct spawn location for old worlds
Mobs don't run at you anymore in Creative
Zombies and spiders now use the new AI