Looked at a death recap and saw that I had magical damage from a Purple Melee Minion. Description was called "BadPassive" and it was labeled "True Damage" even though the coloring was for Magic Damage.
Attached is a screen shot.
experienced the same problem
RPM is OP and always has been
I have had the same experience. I would like to know why a minion is doing 300 dmg through this bad passive thing. Death recap is so useless in terms of knowing who did what.
Sorry for necro, but the bug is rearing its head again.
I was playing Ryze on ARAM (Howling Abyss) and got the exact same bug stating I took 630 damage.
this happens to me all the time. one time i took 4000 dmg from bad passive as 
tank. i also somehow took dmg from a 
nothing with it dealing 200 magic dmg....
This is still a thing even now. Did a 1v1 against a friend and he died as shaco, while invisible, to 400 true damage from a minion thanks to BadPassive. Rito really needs to explain this...
happened to me too 230 true dmg
