This bug report is for the in-dev lod cloud rendering. Currently the clouds always render, even if the vanilla rendering is skipped. This causes issues with shaders, and also other mods that disable or mess with vanilla clouds (like mine, better-clouds). Mostly that clouds appear twice. A solution would be to inject into the
LevelRenderer#renderClouds
LevelRenderer#renderClouds
methods and set a flag that is has been called in the current frame. Not sure if thats the best solution tho.