Titanic Hydra on Shaco

I believe this is either a bug or something that should be changed. The active ability on Titanic Hydra causes your next auto attack to activate the ability. The activation of the Titanic Hydra ability SHOULD NOT break shaco's stealth. For evidence that it should not break Shaco's stealth you can use Youmou's Ghostblade. The Ghostblade has an activated ability too which does NOT break shaco's stealth, there is no reason Titanic Hydra's active prior to auto attacking should break shaco's stealth. Thank you and I hope this is fixed/changed.