[Gameplay] Ekko Q Not Making Sound On Hitting Enemies in Brush

So, earlier today I was playing Ekko and I decided to check to see if anyone on the enemy team was in a brush using my Q (for those of you who don't know, skillshots make sounds when they hit enemies, even if the enemy isn't revealed, so that's a great way to scout out unwarded brush to see if enemies are there). I throw it out, hear nothing, walk into the bush, and find 2 members of the enemy team, both of whom have a stack of my passive on them. I have not tested this to try to reproduce it, but it's a thing that got me killed when I shouldn't have been.

To reproduce:

1. Have an enemy in brush (may want to test just in general out of vision, too)
2. As Ekko, throw your Q into the brush and hit the enemy
3. No sound should be made to indicate that they were hit.