The problem I'm having with Azir's Wall

https://media.giphy.com/media/gHpuSxZs0aasw/giphy.gif I've clearly aimed the indicator correctly, but it goes the opposite direction. It's not something that happens everytime, but once or twice this problem pops up and I can't seem to figure out what causes it. I'm not even sure that it's a bug because I haven't seen anyone else talk about having this problem.

Also, I know it's not the best execution of his drift, this is from my first game as Azir so it's not exactly the best gameplay ever. I've gotten better at it though, it's just a matter of remembering to use it in whatever situation that gets me.