Hi,
on the stress test I placed 2 x tents near each other. One was close to a bush and one wasn't. When I logged back in a couple of hours later the one close to the bush was gone completely. I do not believe another player took it. I run an experimental server where we have put barrels back in and have found the same thing happens on that. Anything placed touching a tree or bush is not persistent so suspect this is the case here too.