Mandela Effect:
It bounced but didn’t break, which was bad luck
New timeline: There wasn’t even a champagne bottle at all
The Christening of the Titanic. People remember that the champagne bottle didn’t break during the launch ceremony. It meant bad luck, and you know how that turned out.
The White Star line though, the owners of the ship, didn’t have champagne bottles for the launch ceremony, the Titanic wasn’t christened, ever, at all.
So, how do people remember otherwise?