As it is says in the title. Using a shader with this mod results in the particle weather appearing as pure white. This also affects wind and standard sand particles. Despite best efforts, not been able to identify what part of shaders are causing this.

huh yeah uh i have NO idea what could possibly cause this but perhaps try using a different shaderpack and see if it persists

Only Complementary shaders has this problem. For a temporary fix, enable "compatibility mode" in the Iris shader settings, and enable "do waving in compatibility mode". Many features are turned off from this setting so I am trying to find any other hidden setting that can fix it.