Red Kayn breathing on soulhunter

This doesn't happen all the time, but I notice occasionally that when i go red kayn with his soul hunter skin I can hear constant breathing. Its the constant noise of his E and Rhaast's heavy breathing. I don't know if this ties into the bug with Yi awhile back, but I noticed it's been there since release. It doesn't bother me too much, but may inconvenience some people.