The Office is one of the most beloved sitcoms of all time, and even though it ended a decade ago, it's still relevant today. The mockumentary style of the show is a frequently revisited fan favorite for many reasons. It's easy to rewatch, so it's unsurprising that some fans notice once-unknown things on a new glimpse.
Source:https://www.cbr.com/biggest-continuity-errors-the-office/