I encountered a potential bug with the interaction between the card "Dragonhawk" and the card "Annie Joins Up." I may be mistaken about what should occur in this scenario, so apologies in advance if I misunderstood what should happen.

In this case, I had Annie Joins up on the battlefield, which means Dragonhawk's abilities trigger twice.

I cast Dragonhawk and exile a number of cards. At the beginning of my endstep, I have four cards left in exile.

My understanding is that Dragonhawk deals 2 damage per card to the opponent, which would be 8 total damage. But since Annie Joins Up is on the battlefield, this would trigger twice, leading to 16 total damage.

My opponent had 13 life at the beginning of my endstep. After Dragonhawk's triggers resolved, they were only dealt 8 total damage (4 damage twice), leading them to have 5 life left.

Unless I'm missing something, I think the interaction and damage count is off with these two cards. I believe my opponent should have lost the game due to having been dealt 16 total damage (2x per card, 4 cards = 8 damage, triggered twice = 16).