Expensive Building Vanishing on Placement

Game mode: [Online ]
Problem: [Bug]
Region: [Near Black Hand Base]

So far, since the most recent patch (it is currently May 20, 2018) I have seen 2 lesser wheels of pain, one large wheel of pain and 3 religious altars dissappear upon placement. We are running our own server on a hosted solution at survivalservers

Steps on how to reproduce issue:

  1. Craft an item taking lots of time and effort
  2. Place it on a spot that shows clear
  3. Item vanishes not always, but often

Also, I have killed elephants and rhinos and their bodies have vanished…and a bleeding rhino flew off into the sky over my head.

I have found flying rhino’s as well, not so much on elephants but especially on Rhino’s, once dispatched they take to the air and you have to run after them before they decay and disappear.