Biome Depth Weight setting creates massive spikes in oceans

The Biome Depth Weight has a valid range of 1.000 to 20.000, with a default value of 1.000. When gradually adjusting this setting, most biomes swell and gradually change. (Rivers become wider and deeper, etc.) However, on Ocean--Deep Ocean boundaries, massive spikes that tower to the top of the map (y = 256) appear. This occurs even when slightly adjusting the Biome Depth Weight value.

How to reproduce:

1. Create a new world.
2. Change world type to Customized.
3. Change Biome Depth Weight to 1.250.
4. Create world.
5. Locate an Ocean--Deep Ocean biome boundary.

You can also reproduce this bug by using the attached world customization preset with one of the following seeds, which have a spawn point near an ocean:

The GIF image below animates how the Ocean--Deep Ocean boundary changes as the Biome Depth Weight (BDW) is increased. Created using the following:

Caves, ravines, mineshafts, lava lakes, etc. were turned off using world customization.