Bug: I always thought I just imagined things back in the day when coming out of the hallway's window door I saw a statue randomly flying across the screen. I was never able to replicate the bug, but it turns out it actually is a legitimate bug with an explanation (it was supposed to be an airplane Easter egg, but the code fetches the wrong item). Longer explanation and even a fix in the video.
Factual error: When Fifi changes out of her uniform teasing some sweet EGA pixel nudity, the unmistakeable tunes of Ravel's Bolero play from her Victrola. The game is set in 1925, but the famous Ravel music piece premiered only in 1928.
Factual error: Examine the axe (not the armor, the axe) in the hallway. The description says it was crafted by Doge Guiseppe Minelli. Besides the fact that there has never been a doge by that name or family (and he probably wouldn't be making his own weapons), "Guiseppe" is a misspelling of the Italian name Giuseppe. The text mentions also "Antonio Fermaccelli the bologna merchant." Bologna should be capitalized, being a city, unless we're talking about an aristocrat who sold baloney, who wouldn't be called that way in the XIV century anyway. Finally, "Fermaccelli" is not a legit Italian last name.