Continuity mistake: At the bar "Trade" Charlotte is having tape on her upper body in one shot, but it disappears a second later when she sees Anthony. She has no time to take it off. (00:03:45)
Continuity mistake: At the club, when Oliver tells Carrie that he makes discounts to columnist, a man behind her sneaks in and raises his hand to order a drink. A shot later it's lowered. (00:05:45)
Continuity mistake: At Bungalow 8 a man in a red shirt places both hands on Oliver's shoulder, but it swaps to just one hand a shot later. This swaps back and forth all the time.
Continuity mistake: At Sam's office, his boss holds the paper perpendicular to his body or parallel, depending on the shot.
Continuity mistake: Miranda asks for the biscottis and Charlotte bends over to give them to her. A mere frame later she has managed to raise up and turn towards Sam to grab the drinks.
Continuity mistake: When the girls watch gay porn Charlotte holds the biscotti box with one hand, but a shot later she holds it with both.
Continuity mistake: When Carrie is at her place trying on the ring, her hands are either close to the table or away. This changes back and forth.
Continuity mistake: During lunch, when Oliver says he's not monogamous, the way Carrie holds her drink is inconsistent in every single shot.
Continuity mistake: When Oliver goes to the toilet he leaves the napkin on the table. Its position changes at least 3 times.
Continuity mistake: When Carrie has lunch with Oliver she places her hands on the table, but a shot later they're lowered.
Continuity mistake: At the club, the way Carrie holds Oliver's porn movie changes between the first and second shot.
Continuity mistake: While Carrie is eating with Oliver, the waiters behind them (The one in Chino and The one with a red apron) are sometimes still, others walking by, and others behind Carrie. No continuity, at all.
Continuity mistake: At the club, Oliver hands Carrie his golden bag and she puts her hand on it, but a shot later her hand is away.
Continuity mistake: When Oliver spots Carrie's engagement ring she drinks Martini and the toothpick holding the olives is next to her mouth, a shot later it has magically moved next to her hand, but a shot later it's nowhere to be seen.
Continuity mistake: When Carrie is talking to Oliver at the gay club, her right arm is either on the counter holding a glow stick or down and hanging by her side.
Continuity mistake: While talking to Oliver at the club, the man behind Carrie swaps between dancing and standing still and drinking an orange juice or not in a matter of seconds.
Continuity mistake: Oliver extends two fingers to order a Martini, but a shot later he's just extending one.
Continuity mistake: Right after Charlotte leaves to dance with Gordon Carrie's right arm is raised or not depending on the angle.
Continuity mistake: At the club, Anthony is standing alone, and so prove the angle shot from behind. Then he introduces Gordon who cuddles next to him, but from the angle shot from behind Gordon disappears and we're back to the very same shot of Anthony alone.
Continuity mistake: When Anthony appears, a piece of rectangular confetti suddenly appears out of nowhere on Charlotte's hair in a mere half a second.
Answer: I'm a long-time fan of the show, having re-watched it many times, and I definitely remember slightly different dialogue at the end of that episode than what's on my DVD. I'm afraid I have no idea why this change might have been made or any other info, but you're not insane.
Purple_Girl