One bug I noticed late into the first planet is that the lumberjacks would sometimes return to the closest house but not the one that was the shortest distance walk... like if there was a house across a river that requires you to walk all the way around, and another on the same side of the river but just a tiny bit farther away directly, they would go around.
Other than that, simple and fun little game :)
Hello, thanks for reporting! This should happen only on rare ocasions, as the search for a mill looks under a certain radius around the worker, so if the ideal mill is out of the radius, he might default to a "closer" one but requiring more walking. Increasing the radius degrades the overall performance of the game so I can't easily fix it unfortunately.