When does entity.last_user update?

[Bilka]

The 0.14.6 changelog says that

"build by" was renamed to "last user" and it is updated whenever the entity is: rotated, has circuit condition changed, setting pasted, recipe changed, filter changed, output signal changed, cominbator settings changed,

I made an entity that can't be rotated or opened or interacted with with the circuit network. Does this mean that last_user never updates? Or does it get changed when someone attempts to rotate/open the entity but fails because that is not allowed?

Also does last user update when someone begins to mine the entity but doesn't fully mine it?