I noticed white lines on my screen whenever I jump in water.
I found out the cause was loading a specific rsp. However none of the textures within said rsp are related to water particles.

As such I came to the conclusion that this is a problem with minecraft itself that manifests when custom textures are used.

Steps to reproduce

• Load this rsp sus.zip
  • This rsp only contains custom textures for explosion and enchanting table particles
• Place water in a hole with soulsand in it
• Observe the water surface as you bob up and down in the water
  Minecraft 2024.11.29 - 21.43.17.02.mp4

Observed results

• White lines appear on your screen
  
  
• You can verify it's indeed a problem with particles by setting particles to minimal.

Expected results

• Particle textures wouldn't be broken