Torkoal’s Attack // BUG

I just played someone using a Torkoal and noticed that his attacks were doing twice as much damage as it should’ve. His attack says flip a coin for each fire energy and it does 80 for every heads. But it flipped 8 times when he had 4 energy attached and then the next turn he attached another energy and it flipped 10 times. I definitely felt cheated in that game.