Could you possibly show the players just how the AI won the game, as is very frustrating going from I'm on 9 points, other AI character is on 8, then on his turn he suddenly wins the game but the board only shows his 8 points. Would be nice to see how he's beaten me, so can work on things.
@Miaow Its most likely the AI won with 2 Victory point cards on their hand. did you check the statistics screen? You will find them listed there.