Hi guys
Just here to talk about a weird interaction I've got in game against a Yasuo while wearing Bramble. So I tried on custom with a friend to test it out. The Q3 test start at 0:39.
It is inconsistent sometimes 
does damage and apply Grievous Wounds, sometimes it doesn't apply the debuff and sometimes it even doesn't do damage at all.
TheLastShadow451 votesYasuo Q will only act like an AA on the first target hit. So the first time Sol was the first and only hit and that is why bramble vest applied. The next time the 3rd Q hit Sol and didn't apply bramble vest was because you hit a minion 1st.
Meaning there is no bug here.
Muzét1 votesBut why it didn't apply grievous wounds the second time? Just because of his passive?
TheLastShadow451 votesI literally told you in my post. It's because you hit a minions first and since his Q only applies on-hit affects from the first enemy hit.
Muzét1 votesOh ok now the bulb lighted up in my mind I get it thanks!
Sorry for your time.
EDIT: But by watching the vid again. The second time at 0:52. No minions were hit but I still didn't receive the grievous wounds debuff
AidanWR1 votesYasuo's q applies on-hit effects to the first enemy hit. Bramble Vest counts as an on-hit effect, similar to Panth shield and Shen block, if they are the first enemy struck. This also occurs without the third q
Muzét1 votesOk ok thanks for taking the time!
Do you have an explanation for 0:52?