Villages generate underwater improperly

I started a superflat world with a modified 'Water World' preset.
The preset was as follows: 2;7,5x1,5x3,5x12,48x9;1;biome_1,village
I know that having 'village' enables village generation,
but they don't generate properly, and make large air pockets.

Seed: -5009994271433305898