Worldgen Doors are all facing in 1 of 2 directions

The doors that spawn on the village houses are all facing in 1 of 2 directions depending on the facing of the building. This is meaning that some doors are innies (http://i.imgur.com/hurG69D.png) and others are outies (http://i.imgur.com/J1eVaQa.png). Not major, but its a bug.