Morgana Binding/ Snare BUG

I was playing some games as Morgana with some friends. Multiple times when i tried to use my binding/snare (Q ability) it would dissapear mid-air. I dont know what it was, in the first place i thought there was something wrong with my own client, but my friends saw the bug multiple times too. Please Riot fix this bug, it is really annoying. I you guys will deal with it as soon as possible :)