The player sometimes remains on servers, after a disconnect/timeout

Well, after a disconnect, I assumed, you would be out of the game and therefor no longer on the server.
Instead, I saw myself after I logged back on, I was the only person in a radius of ~50k, therefor nobody else had that area loaded. Even though I was no longer online, everything went on, as if nothing ha happened. (note: I was able to kill that old "me" and double my Inventory)

Steps to Reproduce:
1.Disconnect from a Server/ lose Internet connection (works better sometimes)
2. reconnect quickly
3. Done