Kalista ghost

Ok so i was playing arround in practisetool so i though hey, why not try to one-shot baron so i picked Kalista. I started to q from over the wall (so i could use e to one-shot it) and then accidently pressed ``W```on Baron. When the ghost tuched Baron it just froze. have this happen to more people then just me? Im pritty shore that the ghost is not suposed 2 freeze when it hits Baron...