When Sunny goes to see Waldo he gives him a corked bottle. When Waldo turns around to look at Sunny the bottle is on the table with the cork clearly in it. In the next shot when Waldo is at the table the cork is sitting on end on the table beside the bottle when no one has touched it. The cork remains off for the entirety of the characters talking. They then show Waldo from behind and he picks up the bottle and uncorks it (you can hear the squeak of the cork coming out of the bottle) and poured himself a drink.
In the fight scene with the widow, her shoes keep changing from heels to flats.