The fort of Tathdatan displays two bugs on my machine. One of these bugs is graphical only, the other appears to involve undefined items lying around. The graphical glitch appears only when loading up dwarf mode, and substitutes letters with resized, shrunken sprite pages. The graphical bug does not impact gameplay. The undefined items can be located using the Note provided within the save. There are five undefined items that can be moved around by dwarves, but render the tile blank / black.