In the above episode, there is a scene where Daphne, Roz and Niles are trying to convince Frasier to attend a fundraiser. There is a shot looking out of the window, and you can see a ladder just beyond the balcony's railings. Not the kind that is used for fire escapes, but the kind you use to change light bulbs on the ceiling with. I guess the set designers forgot to remove it after they installed sprinklers on the ceiling to make it look like it's raining outside?