Quinn passive bug

I've noticed when an enemy has a Harrier mark on them and the attack is blocked by some form of invulnerability (Yasuo's Wind Wall, Valdimir's Sanguine Pool, Zhonya's Hourglass, et cetera) the graphic will stay there till it times out of naturally regardless of how many times Quinn attacks after the invulnerability has timed out.

I don't know if this is a graphical issue only or if the extra damage is meant to be applied but isn't, it's just something I've noticed.