If you create a world in the void biome, you will get such a bug

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This will be probably be marked as 'won't fix' or something similar. The Void biome is only meant to be used with Superflat worlds and doesn't make sense here.

When the game generates Overworld-type terrain, it first builds the terrain shape out of stone and water, and then generates all the ground cover and terrain features based on the biome information. Since the Void biome has no such information, the game gives up and just generates the stone terrain as-is.

This isn't a bug this is just normal void world generation