Team Fighting Tactics Brand Death Curse bug

So happened when i had brand in my team that he was my last unit with full mana enemy unit kills him i take damage for the loss then brands ability goes of and i take again damage for loss even though i lost only once the other thing is that i think if i had more hp that i would of tanked more let's say punishment rockets for loosing i think the problem is if units agro then de agro that they then have an trigger to shoot the little legend,also this may happen with other champions too i am no programmer but can you just program to shoot at the very end of the round? or too have a counter for punishment rockets. I would go over the game to see if :the ability came after he was dead,he threw the ability the same time he died or if his spell was just late.