the OP is referring to the windscreen and other ‘glass’ as pertains to seeing out of the airplane - not the instruments or MFD’s
I have noticed on occasion that the odd AI or static ‘parked’ aircraft are missing their glass - leaving the openings in the fuselage…open. As if the plane were abandoned or had been stripped. It doesn’t happen often at all - or with any kind of association to a particular aircraft. But it does happen.
It would be distracting to see that in multiplayer - with an aircraft in flight lol