When Dixon and Laurel are in his car leading up to when he side-swipes another car, his left hand side window is not up. After the accident, when the other driver walks up to confront him, his side window is up.
As Steele and Mildred walk through the gate of his apartment building, she has only her purse, hanging from her arm. When they enter the courtyard after passing through the gate, she is clutching both her purse and the book, tucked in the crook of her arm.
In Dixon's apartment, after Mildred picks up the book from the floor, she holds it with her right hand with the front cover facing away from her, while keeping her purse in her left hand. Soon after, as Dixon approaches her, she moves her right hand toward the top of the book with the cover still facing away. The next shot suddenly shows her left hand resting on top of her right hand, which is back toward the bottom of the book, and the book's front cover is now facing towards her.
When Dixon pours drinks for himself and Mildred, we see him uncap a bottle and pour in the glass. Between cuts, the bottle appears capped before we see him capping it. In the subsequent shots, he moves the same bottle from one place to another and it appears first uncapped, then capped.
When he stands up after falling in Dixon's apartment, Charles has his jacket and tie untidy, and the top and middle buttons of his jacket are fastened. In the following shot when he is embracing Dixon, his jacket and tie are completely neat and only the top button is fastened.
In the final scene when Dixon hurls Laurel onto the bed and lands on top of her, his watch in the foreground quite visibly shows that is about 4 o'clock. However, the mantle clock on the shelf behind them shows the time as 6 o'clock.