Restaurants, servers and food being dumped on the floor

It took a while for me to realize why my waiters were so bad at cleaning up the food from the tables. While the A.I is not perfect...I noticed that the main issue was that my restaurants often had shelves or other places where the plates ended up. And the A.I will often make the call that the waiter can't pick it up again so they will just put down the plates back on the table.

So shelves are also a big no, no in restaurants.