What i did / Steps to reproduce

Loaded bluemap area with two polished blackstone slabs combined into a block

Expected result

A correctly rendered block

Actual result

The block sides were replaced with Macaw's spruce paper trapdoor top

Context

BlueMap Version:
3.4-forge-1.18.2

• The used os and platform: Windows, Forge
• Has the world been generated using any minecraft-mods? 110 other mods.
• Only issue I've found like this so far

I can't reproduce this, that block is rendering fine on my end..

What i can reproduce is, that a block that should render the "missing-texture"-texture (pink/black checkered) is rendering a random other texture, in your case the "Macaw's spruce paper trapdoor top"-texture..
I fixed this in 06c97b7

I'll close this issue because i can't reproduce it. If you find a better way to reproduce this, you can reopen it with the steps explained :)