Turret collision

Champions still (rarely) get stuck on turrets when walking past them. My recent Amumu game that happened when walking to my red buff from base. It's not lag, nor fps drop. Everyone in my game can see that I'm stuck on the turret and I have to do some wonky crap in order to get unstuck. I'm not gunna post a video of this cause I posted plenty of them in the past. Really hope this gets fixed some day. Been a long standing bug.