What is the issue?
The fade-in animation looks weird with Chocapic13's Shaders and Sildur's Vibrant shaders

(With Chocapic13's Shaders) This also affects almost all the edits of Chocapic13's Shaders such as photon and Bliss

(With Sildur's Vibrant shaders)I'm not sure if other shaders in Sildur series could be affected

Conditions to reproduce
1.Enable Sildur's Vibrant shaders or Chocapic13's Shaders
2.Enable Fade in mod setting

Does this issue appear only with Sodium, Iris and Chunks Fade In?
Yes

Hi! This is known issue and it happens with a lot of shaders. Currently I've no idea how to fix it due to large amount of variations of shader code

It would be nice if shader authors could add support for this mod because I don't think this mod itself can deal with all of the shader code.