I still have some portals where I got an acceptance mail for the additional picture, but it didn’t make it to the game yet.
Accepted on 21th Nov (Event)
I have had this issue for over a month now on iOS. This came 10 minutes ago, 3 Jan 2021 - no new photo in scanner though. It's one of many that I've received:
the bug is by far not finished. The "forgotten" pictures should get synced this month
(source: Casey in the wayfarer forum)