Easy Baron and Dragon for Shaco bug

Not sure if it's a true bug, but when we were messing around on a custom game, I wanted to see if I could solo Baron Nashor as Shaco. I dropped a JitB right in that little nook in front of him and deceived behind him, he just sat there and allowed me to AA him until he was dead, the same thing went for the dragon. If you stack your JitB or your Clone right on top of the dragon or right in front of Baron Nashor, they won't attack.