Buggy water with DH

[umisti]

Describe the bug
A clear and concise description of what the bug is.

Buggy water when using Distant Horizons.

To Reproduce
Steps to reproduce the behavior:

1. Use Distant horizons with kappapt
2. Disabling distant horizons rendering gets rid of the bug

Expected behavior
I expect to not see whatever it was i saw, i will attach a video.

Screenshots
If applicable, add screenshots to help explain your problem. Preferrably with the F3 Screen being open.
https://www.youtube.com/watch?v=Er6OgrUTOsQ

Environment (please complete the following information):
Optifine Version: N/A
Minecraft Version: 1.21.8
Shaderpack Version: KappaPT v18.8
Graphics Card and Driver Version: AMD RX 7900XTX, 25.9.1
Operating System: Windows 11 Pro
CPU: Ryzen 7 7800x3d
Amount of System Memory (total and assigned to Java): 32gb total, 4 allocated

Additional context
Add any other context about the problem here.