This obviously didn't fit into either a bug report or suggestion, so I didn't mark it as either. I'm trying to add the shaft and cog blocks to the Complementary Unbound shader. I've gotten so far as to get world lighting working on them, even though it looks a bit strange when using the batching backend, as it's shown in the attached screen shot.

My question for you is, is this something that can actually be done, or is the method for rendering the Create components different enough from the Minecraft block entity rendering that it isn't possible? Do you know of any way that this might be possible that I could look into?
Unfortunately, I'm not very well versed in Java, so while I've tried to understand the rendering code, I just can't figure out what any of it actually does.

#devchat in the create discord would be a better place for this