Grass and water no longer have tone variations when the Caves & Cliffs toggle is on

Steps to Reproduce:

1. Create a new world;
2. Observe the patches of varying tones in grass and/or water;
3. Enable the Caves & Cliffs toggle;
4. Observe the difference.

Observed Results:
When the Caves & Cliffs toggle is enabled, grass and water no longer have patches of varying tones.

Expected Results:
Grass and water stay the same when the toggle is enabled.

Screenshots/Videos attached: Yes

Notes: