Affects Version/s: Minecraft 1.4.5, Minecraft 1.5, Minecraft 1.6.4, Minecraft 1.7.2, Minecraft 1.8, Minecraft 1.8.1-pre3, Minecraft 1.8.4, Minecraft 1.8.8, Minecraft 15w45a, Minecraft 1.10.2, Minecraft 1.11.2
Fix Version/s: None
Witches can not spawn in huts generated in a superflat world.
One witch might be generated with the hut as it is created, but no more will spawn inside the 7x5x9 boundary spawn box of the hut.
To show the bug, generate the world with the settings below.
Game Mode: Survival or Creative
Superflat world preset: 3;2*minecraft:bedrock,60*minecraft:stone,1*minecraft:stone_slab:0;6;village,biome_1(distance=32)
Generate Structures: ON
Position of hut: /tp 260 64 288
Put slabs on top of the roof so no mobs will spawn there and choke the mob cap.
Now ordinary mobs (zombies, skeletons, creepers etc.) will spawn in the hut at night but no witches.
In a world created without the superflat setting, only witches will spawn in huts, and no ordinary mobs.