Turret Agro Visual Bug

(This bug was on Patch 9.22)

Was playing URF earlier today and mid match I (Bard) ulted an enemy turret that my teammate Kayn was about to go under so that he wouldn't take turret agro. As he exited his shadow step form he started taking turret agro then my ult landed on the turret to stop the turret agro and once he leaves the turret agro zone to go start dragon the red laser sight of the turret was still locked onto and followed him into the dragon pit and the enemy team could see where Kayn was (not his model but where the end of the laser sight is) and thus they could see into fog of war that he and the team were starting the dragon fight.

Eventually when minions started attacking the turret and the laser sight was locked onto them it stopped but the laser even followed Kayn back to base. This just recently happened so I'm not sure exactly what the cause is for sure. For a visual reference, check the linked video to see what happened. If you have experienced this bug also please post it down below.