I was playing board 4 in the last round of a game. I had two buildings with no repeats in that brown segment. I rolled a two and had a 1 space and a 2 space available. The game would not let me put the building in the 2 space (either building). When I used a worker to adjust the roll to a 1, the game let me put the building on the 1 space next to it (same segment). I think the rightmost brown space is mislabeled as some other number (it is not a 1, 2 or 3) on board 4.
Rocco