HDRP and Shader Graph: Using Keywords breaks lighting

adding a keyword to a shader graph shader (no matter if it is boolean or enum, shader feature or multi compile) immediately breaks transmission lighting.
further more multi_compile_vertex is not supported?!
and how the heck am i supposed to to add LOD fading?

I’m going to necro this post because:

  1. Maybe you have a solution now?
  2. I just hit this in October 2021.