This is why Beta Testers are a good idea! Interesting video, I'd like to see more on bug finds in different games.
It might come as a surprise but it can be quite difficult to test a game for 416 years. I wouldn't exactly call it a 'bug' either (it is but also isn't?) - it's just how numbers work in computer systems. They keep going up until they hit a max number then circle back around to the lowest number. And given it takes 416 years to trigger it in standard gameplay I imagine it wasn't that high of a priority for them to fix even if they did uncover it.
Aussie Game Developer. Let me know your favourite podcast.