Hey boss,
A few times this has happened and we were scratching our head as to why, but we came to the conclusion that a tool cupboard that gets input from a sync pipe can glitch out and say unprotected and is decaying as shown in image.
TC has more then enough resources to stop this and the only way to fix the TC is to remove resources and destroy TC and place a new one.
The image is from an last months server and we dont run those high numbers of resources anymore :P
For now I have edit your code to add ToolCupboard to the blacklist to stop our players for sync piping to it to see if we still have this issue.
public static bool IsBlacklisted(BaseEntity container) =>
container is BaseFuelLightSource || container is Locker || container is ShopFront || container is BuildingPrivlidge ||
container is RepairBench || container is LootContainer;
