The sweet from the Church appears to be stuck inside Mr. Bean's left pocket when it was original placed in his right pocket.
When Mr Bean unlocks his hood of his car he takes his hand away from the key but in the next scene you see him take the key from the lock.
A child that age on the plane sitting next to Mr Bean is far too young. At that age, children are supposed to be kept in a separate area where the flight attendants can keep an eye on him as he is an under-aged flyer.