I was playing vs. a hunter who was playing misdirection. I had a hungry dragon out and a true silver and attacked with the hungry dragon. It got misdirected toward me, hit me for 5, and then it died. I am using a deck tracker and checked out the replay and I did in fact attack with the hungry dragon first. Also my dragon had 4 health. So does the attack on the truesilver take the health of the minion if it gets misdirected?
This is not a bug, it is intended. The idea behind this is that being your turn your weapon is "unlocked", so your hero actually has 4 attack from the weapon. You don't loose the weapon's durability, because you haven't actually attacked with the weapon. But your minion takes 4 damage from the hero.