It's the way you disconnect. In a way you could say that your computer is still receiving the information and sending back information that your character is around but your client no longer has access to that session. It tends to happen in situations when you get a fingersnap like disconnect that kicks you off the client but then revives with enough time to send information back to the server but because you are back online the game thinks you are still in control of your character and you sadly have to wait for that lag delay til it realizes that it's sending information to no one.