Not 100% Sure This IS a Bug, But... (Subject: Yasuo; Steel Tempest)

So I've been playing Yasuo lately, and after patch 5.11 I noticed that his Q into the fog or an unwarded bush (no vision locations) no longer plays the sound of it hitting an enemy. I don't know if this is intentional or a bug, but given I didn't read anything about it, I assume it's a bug. And if that's the case, it's also a really massive bug for someone like Yasuo since a fully charged Q and also Qing over walls is a big way for him to check bushes and camps safely.

TL;DR - Yasuo's Q doesn't play a hit sound on enemies he can't see after patch 5.11, bug or intentional?