You'd be surprised how often this kind of thing happens, though. Certain regions won't get patches and updates, or because a different company is handling a different area, they fuck something up that doesn't become an issue for regions more closely tied to the developer or original publisher, etc. Happens a lot with ports, too, where someone else is hired to deal with versions X and Y but the original dev only handled version Z (complicated by different publishers in different regions at times as well, as seen here).
