Hi, thanks for posting this problem. We are sitting on official server 1009 and having the same problem at the same point. I posted it here Building Problem.
First we thought, there are old invisble structures. Than we “found” an elevator in the air, apparently someone built before us. But after decay, you still cannot build anything. In the center of the heat ppoint you can set up a structure, but you never see it, vanished, also from inventory.
So, helpfully reports from other servers at the same location would be nice.
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