World integrity: technical state and legal state
A visual error, a failure in the 3D world or loss of temporary browser data may affect what a person sees. Those technical problems cannot retroactively change who holds a right or alter an official legal record.


The classic scenario
A rollback may visually remove an object that should still belong to someone. The correct response is to reconcile the world with the state confirmed by the competent source — not pretend the transaction ceased to exist.
Not every change in the world is a change in law
Investigate rendering, synchronization or presentation data.
Requires competent title and procedure and must generate a historical chain.
Preserve evidence and correct the projection or source that is wrong, without blind overwriting.
Legal state does not disappear merely because an interface stops working.