Items can be placed into the output slot in the crafter, but then get instantly deleted

Items can be placed into the output slot of the crafter, but then get instantly deleted.

What I expected to happen was...:
nothing, I wanted to see if the output slot was broken, and It was.

What actually happened was...:
I placed an item into the output slot, only for it to disappear.

Steps to Reproduce:
1. Put an item in the output slot of a crafter
2. it will be deleted.