Some particles have very thin, vertical lines that flash in and out around the particles

The particle atlas can slightly leak causing particle textures to be incorrect, having a thin line of the neighbouring texture.
In older versions of Minecraft this apparently affected campfire smoke, without need for resourcepacks.

It can be triggered in modern versions still with resource packs.
Note: The lines aren't caused by the resource pack, as the rsp doesn't change water particles. The rsp simply triggers the atlas leak which is a vanilla problem.

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