[GAMEPLAY] Heimerdinger turret bug (out-of-range targets)

Hello again Riot! Found another bug while playing. Sometimes when I play Heimerdinger, whether in bots or howling Abyss, I notice one of the turrets continues to fire at an enemy champion that is still alive but out of range of the turret. It doesn't do any dmg to them, and when something comes in range of the turret it prioritizes said target, but it is still a visual bug and shows where the enemy is since the turret bullet hones in on them. The bug only occurs when the turret has no other target in range and has previously attacked a target. Attached is a screenshot i managed to get of the turret firing out of range. This happens roughly every other time I play... It's Gone Mad!!