Deep warm ocean generates without coral and sea pickles

The bug

Deep warm ocean biome seems to be completely forgotten by Mojang in terms of updating its generation, surely because it's an unused biome in default world generation.

But although it's an (almost) unused biome, it should be more consistent with normal warm ocean (it doesn't generate sea pickles & coral reefs!).

Actually, it is not completely unused, since you can access it via buffet.