Wukong Stoneskin Doing Damage

In my last Legend of the Poro King, Stoneskin was showing up as doing ample amounts of damage, for multiple people on my team. Their Wukong went 26-7 in a 14 minute game. He got multiple pentakills. I have played since before season 1 and this amount of damage was disproportionately high. For example the Sivir on their team was 7-3 and Wukong did 3 times the amount of damage she did.

His stoneskin do 30% of our Aurelion Sol's life in one combo, and he was dead. I believe he is seriously bugged.