
The post-it always sticks twice - S6-E7
Continuity mistake: If you check the Post-it note on the previous episode and this one's, it is not the same note. It's very similar, but the "t" in "Can't" is different, the apostrophe in "I'm" is within the word then above it, and other small differences.
The post-it always sticks twice - S6-E7
Continuity mistake: When Charlotte and Sam read the Post-it, in the close-up both of her hands appear on the note; yet in the wide angle Charlotte's hand is on Sam's hand, but not on the Post-it.

The post-it always sticks twice - S6-E7
Continuity mistake: Charlotte puts her hand on Sam's to show her her ring. The position of Sam's hand changes between shots.
The post-it always sticks twice - S6-E7
Continuity mistake: Samantha produces a joint outside the club and the way she holds it differs between the front and back shots.
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