What I expected to happen was...:
An fire on top of the hopper that was visible
What actually happened was...:
I couldn't see the fire and it wouldn't burn me, but smoke would show up on it would also burn chicken.
Steps to Reproduce:
1. place down hopper
2. shift right-click on hopper with an flint and steel
That the invisible fire doesn't burn you belongs to the creative mode. In survival mode it will burn you.
But the major bug is that the chicken is transferred as raw chicken and not as cooked chicken into the chest - no automatic grills 😉