[Gameplay] Azir - Sand soldiers attack inconsistency.

I am a casual Azir player and have noticed lately, although uncommon, an issue when preforming attack commands with Sand Soldiers. There are situations in which the Sand Soldier(s) will fail to command an attack although the sound effect is clearly indicating the attack went off. This seems to happen more often after a using Conquering Sands (Q) and following with an auto attack. This happens on minions and champions.

Not sure if this is a bug, intentional or what not. Maybe I'm doing something incorrect? But when you hear the Soldier attack fully, when ordered to attack, despite standing there motionless, there could be a small issue.