Vibrant Visuals: Bottom face of lily pads is gray

I am not using any add-ons or resource packs

This is only visible with Vibrant Visuals enabled. The bottom face of waterlilys looks gray

Reproduction Steps:
- Create a water pillar as pictured
- Place a lilypad on top
- Look at it from below

Observed Results:
- The lilypad appears gray

Expected Results:
- The lilypad would be green