Everything has been left in auto as you do on an Airbus, I've even switched the system to manual and tried to dump pressure by fully opening the outflow valves.
They're fully open with no change in delta P, v/s or cabin alt, and putting the system back to automatic doesn't cause the valves to move back to closed (where they were before).
I've found this. I'm currently at FL360 with a cabin atltitude of 570ft and a delta P of 11.1!
EDIT: For reference, this is the state of the pressurisation and bleed panels: