I was playing on AU 1 .58 experimental server today with a friend when this happened. We had just placed down 1 tent and 1 yellow barrel, as well as 2 backpacks, pair of pants and shirt. When instantly in front of our eyes it all disappeared. The tent, all contents, all clothing items and the barrel. Vanished in a blink. This was around 6-7pm AEDST. Friend with me saw the same thing. Server reset at usual time, still gone, checked few hours later and was still gone. Definitely has vanished. We were not interacting with anything at the time.