Room AirTightness does not respect IMyOxygenProvider
This recently became an issue in my DefenseShield mod, this was not an issue prior to the new air tightness rework, at least not to this extreme.
When the Air-tightness feature is enabled and a pressurized room exists within an IMyOxygenProvider shape the grid's worldaabb ignores O2 changes. However if that room is exposed to the outside (i.e. doors are opened and then closed) both the worldaabb and the rooms normalize their pressure.