Rendering VDB from Houdini

Hello everyone,

I’m not sure if I’m at the right place to post my Cycle rendering issue, however could you check this post what I have done here Rendering VDB from Houdini 18 - Lighting and Rendering - Blender Artists Community

If it’s a bug…perhaps that could be interesting for the Cycle development.
If not, maybe someone could tell me what I did wrong.

Thank you in advance.