David Longley writes:

I've just cleaned our Panasonic NN-811A Combo Microwave and noted
that the door glass/cover has become misty and on the interior
surface by the looks of it. I can see no way of getting at this,
removing the two door screws on the latch side doesn't allow one to
get access as far as I can see.

Two questions: 1) isn't it a bit odd that this should happen? 2) any
suggestions?

Yes, get over it. At least I hope you have bigger things to think about.

Regards, NT