[Gameplay] Heimerdinger Turret Shooting Forever

I'm really unsure of how it happened or why, so good luck Riot. Basically, I just used Heimerdinger and placed some turrets down and then one of them glitched and kept shooting an enemy even when they were at their fountain. At the time, I was in the Dragon Pit. I believe my items consisted of a Zhonya's and I think I might've Zhonya's'd within the range of the turret. I also had a Deathcap, I believe. The one that it was attacking was a Rek'sai, but I do not believe she ulted to get out of the turret range.