What I expected to happen was:

Like every other solid block, bone blocks should not be rendered if they are covered in other solid blocks.

What actually happened was:

The block model of bone blocks lacks the cullface definition for north, south, west and east, so four out of six faces are still rendered when they shouldn't be.

How to reproduce:

1. Grab a bone block.
2. Build a hollow cube out of stone or another solid block and fill the inside with bone blocks
3. Switch to spectator mode
4. Dive into the cube and notice that the bone blocks are still rendered
5. Dive into your minecraft.jar and extract assets/minecraft/models/block/bone_block.json
6. Edit this .json file and notice that four cullface definitions are missing.

Attachments:

• bone_block.json – The fixed block model file.
• bone_block_fossil_underground.png – A fossil underground in spectator mode, which should not be visible.
• bone_block_in_stone.png – A single bone block inside of a 3×3 stone cube, again viewed in spectator mode.

About this report:

I searched for other reports about this, but couldn't find any. I'm really sorry if I missed one.

This bug report relates to MC-102069, but it is not a duplicate. MC-102069 has been fixed, so you can now put torches on bone blocks and bone blocks aren't transparent anymore. This report however is about the rendering and the block model only.