I have created a new HDRP project which has the workbench scene in it. I set about creating some materials for my project, but I have a shadow problem I can't seem to solve. I created a plane, and a new material (seen in image below). I set it up exactly the same as the floor material currently in the scene, but the shadows are black on my new material. If I drop the floor material from the scene onto the plane, it's fine, the shadow works correctly. But put my new material back on, and it doesn't. I can't find anything about this. Any help would be greatly appreciated.