Azir soldier bug

When I place a soldier and single click to attack a minion, the soldier continuously attacks that minion. But, there are times when the soldier changes targets for no reason. It may be when the minions "re-organize" to move into attack range, but the targeted minion is still well within the soldiers range. This issue has also happened where the soldier will stop attacking, and Azir will auto a different target. I have had this happen, when attacking enemy champs (losing the kill) and when attacking minions (loosing CS). Azir needs an update.