Azir Dash Bug

I encountered a bug with Azir vs J4. He ulted me, I ulted him back while shoving my minions away and jumping to them. I ended up between the wall and his ults wall and remained frozen in place long after it had dispelled (about 3 seconds post the walls going down). I'm not sure if it was because I used my E close to a wall and got stuck that way or if it was a bug involving Jarvan's hit box on his ult but it ended up getting me killed a few times.