Describe the bug
Noticed stair corner pieces arent 3d for most blocks,

Info (please complete the following information):

• OS W10
• Minecraft Version 1.17.1
• Classic 3D Version 13.3.1

Perfect! ill go ahead and close this then

Copper is the only one ive noticed that is still 3D

I have been aware of this. I was going to fix this in 14.0, but thanks for reporting this.