Not sure if this has already been reported, but anyway. Bits behind blocks that render partially solid and partially translucent (stairs in my case) do not render. (And yes, those are bits, because Quark's Diorite Pavements sadly doesn't have a stairs variant.

• MC Version: 1.16.5
• C&B Version: 0.3.4
• Do You Have Optifine: No

There is sadly nothing that I can change here.

C&B uses the Rendering mechanics integrated with Minecraft and we render each bit in the same renderlayer as its parent block.