Short On Tiles
Now this one is irritating, for sure, but also borderline devastating. Could you imagine putting in all of that hard work to only run short on tiles while working one on of the last designs?
Holy Moly! That must have taken ages to have overcome that degree of disappointment. Quite possibly, the owners of this building have had to pass by this failure thousands of times, reliving the moment they realized that they ran out of white tiles, every time they laid eyes on it.