Ryze bot disconnected

Was playing a bot game where I played Miss Fortune mid lane. Ryze got to level 5 where he was sieging my tower. I ulted and took out 4/5 of his health and all the minions in the wave. He just stood there after that and let the minions kill him. After that he never returned back into lane. So either he ragequit because I am that good or his AI is bugged. Probably the latter of the two. But if bots do rage quit that would be an interesting dynamic and very reflective of PvP play.