Someone out there has an incomplete puzzle

Like so many other people out there who have nothing better to do, one Reddit user decided to solve a thousand-piece puzzle. While working on different sections of the puzzle at once, he noticed something odd about his puzzle set. There were two identical pieces.

He had no choice but to complete the puzzle to determine whether it was missing a piece or came with a spare edge piece. Ideally, he would be able to complete his puzzle with an extra piece to spare, but this would mean some unfortunate soul is living with an incomplete puzzle. Our hearts break for you, disappointed puzzle owner.