Blobs of Coarse Dirt Randomly Generates in Acacia Biomes near Hills with Caves n Cliffs Toggle On

Summary: If a player enable the Caves n Cliffs experimental Toggle on and finds a acacia biome near a hill they likely will see a bugged coarse dirt and stone hill or a plains grass hill in that biome.

Steps To Reproduce:
Step 1: Create World
Step 2: Enable Caves n Cliffs toggle
Step 3: Find a Acacia Biome near a Hill
Step 4: Repeat

Observed Result: Coarse Dirt Generates in Acacia Biomes near Hills Typically.

Expected Result: Coarse Dirt shouldn't Generate in Acacia Biomes.

Seed: 1578892136 and
Cords: Cords are in Screenshots