Darius - Loss of Control - Major Bug

ARAM game - Dunkmaster Darius - Apprehend

I am not sure which parts are relevant. I was playing an ARAM game with Dunkmaster Darius. Every time I used Apprehend, I would lose control of Darius. He would continue attacking whatever target I last selected, even following back to the turret. If it was a minion, and he killed it, then I couldn't move for a while. I would have to used my abilities, perhaps re-using Apprehend, to regain control. It took me a while to realize that was the cause. I had to finish the rest of the game without pulling anyone.