world generation with water

Put the summary of the bug you're having here

What I expected to happen was...:
i was expected to see the new caves and explore the world

What actually happened was...:
when i was generated a new world with the new version water spawn on areas on the world that below 63y for example i found a desert temple floating on the water and the biome it was stand on it was desert but its surrounded by water and you can see more weirdly shapes that below the water like water created on the area that suppose to not have any water

Steps to Reproduce:
1. first put the seed: 7365353337951198442 be sure on 21w06a
2. than walk to 220x and 201z
3. and than you can see the temple sorround by water and see other types of the biome desert itself