They were bumped by another player before they started shooting. It's possible that the patches we added to prevent this from happening aren't working properly, or don't cover all cases.
Why state 'shooting' from player won't overwrite anything else (bumped/lying on ground/etc)?
Why remote player can be knocked by shotgun at shooter's screen while he are not knocked at his own screen? Why it not synchronized from knocked (or not knocked) player only? It could to help to avoid alot of problems with missed shoots.
VCMP-139 As a scripter, I want to create client-side map markers, spheres, checkpoints, etc.
VCMP-29 Add per-world settings for weather, gravity, and other settings
VCMP-51 As a scripter, I want to be able to access datetime, sound, and timer functions on the client side