Weird interaction with Urgot and Bard
So, I was playing a pvp game a few days ago. I was playing Urgot, and I went bot to gank the enemy Bard. He opened a portal and started to go through it. I ulted him when he was very close to the portal. I can't remember whether he was about to enter it, or if it was shortly after he entered the portal. For some reason, Bard didn't switch places with me like he is supposed to. Is this intended or is this a bug?