If you select a random opponent after winning, the numbers reset correctly; however, the sprites do not shrink, and both your own and the new opponent's sprite will inherit the height of the previous, despite any number changes. Further, if you continue to play, the sprite models will continue to grow/shrink from the inherited sizes. Which is amazing if perhaps the map changed to fit them as a way of like, having a challenge gauntlet to see how large you can make your character (galaxy size+), however, right now it is 100% a visual bug.