OMFG, guys you're soooooooo slowpoked.
In some of UPDATES there was information about new innovation!
DON'T USE FIRE-STATION LADDER BUG OR YOU WILL DIE FROM NOW AND FOREVER.
There KILLING ZONE now inside a wall with ladder. So. Your client-side desync tells server that you tried to use this bug while you running around floors by-stairs inside fire-station.
Don't RUN SO FAST IN A SMALL PLACES next time.
Just imagine that you fallen out the window because of your running around inside 2m² room with 4 windows. :D
Can you run around inside your bathroom fast without traumas? I can't)