I hate pathfinding.
Enemy J4 ults a teammate behind me - I don't get caught in the ring but it's close enough to the terrain that I can't pass through the gap. My champion instinctively knows this, and paths directly backward toward the enemy formation to go around it the long way. Had my champion walked the direction I wanted her to, she could have escaped by Flashing over the wall. But no, she went the wrong direction, straight into a buttload of tanks, and failed the Flash due to it now being too far.
I sure wish there was a way to toggle pathfinding off entirely like you can targeting minions and whatnot.
And then there's the times when I tell Orianna to throw a Q over a wall, and even though she could reach the spot by walking closer to the wall, she decides to walk all the way around the wall, wasting vital seconds for stealing a drake or securing a kill.
Would be good if pathfinding intelligently considered the range of an ability when deciding where to go to cast it.