Interaction between Yasuo and Shen

Hey, recently, in a ranked match, I was playing Shen into a comp based around Yasuo. At some point, I dashed/taunted Yasuo as he dashed. We were both going opposite directions. However, at the end of both of our dashes, he didn't follow me, as taunt would've forced him to. He stood still rather than followed me. I'm not sure if this is a bug or if it just needs some spaghetti code cleaned up or something else. Look into it? Would be much appreciated