Can you please give us something to reproduce all the different issues you're encouterning with?
Maybe there's a bug, I don't know, because I have no idea what you're doing exactly. If your project cannot be published/shared with us, then please either write a separate test case (in this case I'm happy with a dxbc and/or hlsl shader), or feel free to fix the issues yourself and file a PR.
Binary DXBC is attached. It might be looking a bit weird because the container DXBC was reconstructed from the SHDR code section and input/output signatures provided by the windows driver APIs. Obviously for that particular reason I don't have the shader source code.
Bit late in looking into this, but what was attached wasn't valid DXBC. I wasn't able to disassemble it.
Nothing extracted yet.
When a hull shader (DXBC) contains CLIP_DISTANCE and CULL_DISTANCE parameters in the input signature, the generated SPIRV is incorrect.
Getting the following crash with Intel Mesa drivers:
./src/compiler/nir/nir_lower_clip_cull_distance_arrays.c:54: get_unwrapped_array_length: Assertion `glsl_type_is_array(type)' failed.
My assumption that clip and cull vars are not translated as an array type?