[GAMEPLAY] Darius's E Distance bug

I don't know if it's just master yi, but when I ult away from Darius as yi, and he Presses E after I ult he can still pull me as if he had 700 Range. It's ridiculous. plz look into this, I lost 2 games because of this. He always kills me because when I ult away and get out of range some how he gains an extra 300 and grabs me.