There is also a serversetting that isn’t available on the interface. CachedNoOwnership False
you could try putting that in your serversettings.ini see if it changes anything maybe the default was accidentally changed. (no idea what that one actually does)
It looks to be unconnected with the Container ownership.
We are having doors and placeables lose ownership as well, which speaks to a larger issue. Additionally, we gained, for a short time, the ability to place unconnected ceiling tiles:
That’s been going on for some time, if you stay in a single cell building/dismantling long and often enough the game bugs out and remembers the ‘ghosts’ of removed pieces.
Sometimes they retain stability but usually they’ll self-destruct when the cell is reloaded.