The bug
The biome in “The Void” superflat preset is supposed to be the biome of the same name: the void. This biome spawns no mobs and has its own properties. Instead, the biome used is plains.
How to reproduce
Enter the world creation menu
Pick “flat world”
Select the void preset
Create the world
/fill ~-20 ~ ~-20 ~20 ~ ~20 grass_block
Fly away a bit
Expected results
Mobs should not spawn
Observed results
Mobs spawn. Also the grass color is wrong. It’s unclear if there are other observable differences between the plains and void biome in-game at this time.
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However, this issue is Working as Intended.
Please note, that mechanics of the game may change between updates.
Things such as graphics, sounds, world creation, biomes, redstone, villagers, and animals may not work the same in current versions.
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