Projectiles appearing, but attack/damage not actually proc-ing?

Anyone else have this problem fairly often? I vaguely recall a long, long time ago (I can still remember, how that music used to make me smile) Riot came out with a patch that supposedly addressed this issue. But I still seem to have this issue a lot and it's quite annoying for me when I'm trying to precision attack move.

If it matters, I seem to mostly have this problem when I'm manually clicking on a target and then moving away (rather than attack moving on the ground and then moving away). And before you criticize me for doing this, I usually do it on mages or non-attack speeders or whatever.

Anyway, just throwing it out there that this problem still exists, and it would be nice QoL if the projectile NEVER appears if the attack isn't actually triggered.