When using multi_noise biome source, minecraft:ocean biome generates as a strange plains like landmass

When minecraft:ocean is added to a multi_noise biome source with several other biomes, the ocean will sometimes generate as a strange plains-like biomes with trees, flowers, lakes, underwater ruins above ground, and shipwrecks above ground. Other biomes will also extend into the actual ocean body of water, causing the sea bed to be wrong and the water color to be wrong.