Originally Posted by
DaveReidUK
The massive amount of legroom does indeed make it look like that, but the plug door cannot be used as an E/E (no opening mechanism, no slide, no vent panel, etc).
It is, however, possible to substitute a functioning door to increase the passenger limit, but if that happens it's only likely to be done once during the life of the aircraft.
My guess is that they removed a row of seats to do the inspection.