As of devblog 51 states:
“We are seeing a physics issue with servers after they reach 150,000 colliders, the physics system seems to break down completely – which doesn’t let you build, or explode anything, and spawns you in the sky. We’re trying to get a repro together to send to Unity.”
After 2,5 weeks wipe is needed.
Have to tear down previous old structures to be able to build up new ones. Confirmed.
C4 is working, but no damage is done to walls and or doors. Confirmed.
Some reports in chat they spawn in the sky. Can’t confirm this myself.