[MC-214952] Weird pattern generates under watercaves

Weird geometrical patterns generates on floor of watercaves.

Example's infos:
Worldtype default, default generation settings

Seed: 8904409384666195513
Coords: -891, -23, 587

Linked issues

Why is this a bug?

Is this a joke or what? Thats just how the world generation works

I know it's not really a bug but I don't think Mojang team want a render like that

This is the result of multiple caves intersecting causing messy terrain generation. I have to agree that this happenes too often and looks unnatural

Forwards-resolved towards MC-215060