Anivia's Q invisible

Anivia's Q ability is sometimes invisible - the projectile animation at least. I can see Anivias body animation as she's using the spell, and I can see when it lands in a stunning frost explosion. But the time between those, while it's flying, I sometimes can't see it. The bug has been an issue for me for as long as I can remember, FOUR YEARS at least. I even bought a whole new computer in december, everything but new casing, but the bug is still there. Usually happens once or twice in every game with an Anivia. Never tested trying to play her myself, though. Do anyone else have this experience? Emailed Riot Support bug report, but my bug submission was ignored and I was told to go on the forums instead.
Report as:
Offensive Spam Harassment Incorrect Board