Copper Trapdoor recipe is inconsistent in Crafter compared to Crafting Table

When crafting in a crafter block with 6 copper ingots in specific slots shown in the image give out copper doors instead of copper trapdoor.

 

Steps to reproduce:

1. Place a crafter anywhere in a world.
2. grab 6 copper ingots and place them in crafters with specific slot in image shown below.
3. it will show copper door instead of trapdoors.

 

crafting in a crafting table with copper ingots give you copper trapdoors as shown in another image.