Shader incompatibility for shaders that render accurate water height. Block faces are culled on the sides of water blocks colored by plants on coastlines, and water block faces are culled under other blocks. This creates a gap in the render, especially visible at night.
Version: 1.20.1
Dh: 2.4.2
Forge: 47.4.10
Install a mod that created water plants on coastlines (project vibrant journeys) and Makeup Ultra Fast Shader
Observe the coastline where the plants are.