In the past, you could /invsee someone and if they picked up items it would show you that they picked them up. now /invsee gives you a snapshot of what their inv was when you did it but it doesn't update if they add or remove something from their inv unless you do /invsee again.
This was basically a side-effect of the approach used to hide item IDs in invsee, on the basis that this was a feature that we wanted out kinda fast, I personally opted to go for the approach of just cloning the inventory, having a task to consistently update the inventory seemed somewhat of a performance hitch for very little gain.
