[PBE] [Gameplay] Nexus turret laser sound bugged.

This keeps happening, on PBE as well as in Coop vs AI, Normals and Customs on Live. When there are minions attacking the upper one of the two red team nexus turrets, the laser sound keeps playing even after there are no more targets in turret range (visual stops as usual, but the sound keeps playing). Don't know if this only happens for me or for others as well, but it would be nice if someone at Riot could take a look at it, because it's pretty annoying and irritating.

EDIT: I added the PBE tag, since it occurs there as well, but it's not a PBE-only bug