Possible Bug - Yasuo and Sated Devourer

Just played a game with Yasuo in the jungle, and it appears that Sated's phantom hit procs on every 4th auto (like it does for ranged champions) instead of every other hit like it should for melee champions. Is this a bug? Or did I overlook something somewhere? Searching the internet quickly, I couldn't find anything to suggest that this was an intentional effect, which leads me to believe that this was overlooked at some point (possibly due to him not having a MR growth stat, which is generally tied to ranged champions?)