There’s some good examples of decorative landclaim you can use in the pinned server rules post. That should cover you from the purge correctly spawning in that massive open space. For example, a small series of foundation/torches should be pretty unobtrusive. Your base is already ugly, so it shouldn’t get any worse.
Thanks for the community suggestions, but a BUG is a BUG. Defences are built to keep attackers out.