[GAME PLAY] Bug found in patch 5.1

So I was playing a normal 5v5 premade yesterday and encountered a bug. I was playing as yasuo and somehow enemy TF's gold card went through my windwall and stunned me directly during a team fight (I casted windwall prior approximately 2 seconds before TF releases his gold card). I thought maybe it was because of my internet connection, so I asked my teammates about it and they confirmed that they saw TF's gold card went through the windwall. I hope Riot will look into it and fix it asap.