After Mr. Bean bursts some balloons to get the trolley out of the air in some shots you can see all the balloons fully intact.
Mr. Bean cheats at a dart game, putting cards on darts then throwing it at the wall. When he throws the first one, the card sticks to the wall on an angle, but when he calls for the guy to claim his prize, that first card is now straight.
At the beginning when Mr. Bean gets the baby's pram attached to the back of his car and drives off, you can clearly see that the baby is missing.
When Mr Bean is playing Bingo, the number "57" is called twice in the same game.
While Mr. Bean squeaks the toy to try and cheer the baby up, the dog starts to chase after Mr. Bean and start barking; despite the dog's mouth not even moving.
In the scene where Mr. Bean squeaks the baby toy and is chased by the dog, the dog handler can be seen just to the right of Mr. Bean, giving commands before ducking behind two extras.
During the scene where Bean is on the roller coaster, occasionally the shadow of a camera and camera operator can be seen on him.