[BUG] Champion Pets Not Retargetting Properly

Hello. I'm just reporting a possible bug I've seen several times, recently with some Champion Pets. While I have seen this with other champs, for the purpose of this post, I will use Heimerdinger as a reference. Whenever is attacking a Tower/Inhibitor with his turrets, if any enemy unit draws their aggro, the turrets seem incapable of returning to targeting the structure, even after the enemy unit(s) is/are no longer present. They just sit there idly, awaiting ANOTHER enemy unit. So far, if they are never "distracted" they will usually attack the structure. However, as soon as they attack something alive, they never return to the structure. I have seen this with , , and . seems unaffected by it, likely because you can directly control Tibbers. I would like to know if and when this bug gets corrected, as is my main champion and Pet users and backdooring are signatures of mine.