bug with vi ult

so. i was playing in a match with a while i was so i used my ult on him and when i picked up in the air he used his teleport ablility thingy? idk i dont play him. but anyways it did the slam down animation and did the poof thing on him but he was standing like 5 feetish away from me. i dont think this should happen it is really annoying... sorry for my grammer spelling and all that