Just FYI: one of the primary goals of the OpenXcom project was to ensure that all of the "Known Bugs" in the Ufopaedia.org site were fixed or addressed in this project. During the course of the project new bugs were discovered in the originals that had been missed up to that point. OXC does end up with its own bugs, but as these are reported in the bugtracker, they are addressed in a very efficient manner.