10-31-2013, 08:42 AM
It's not about *after* or *before*, it's about neighbors. Trees need their chunk neighbors in order to check if they fit; but they only ask for terrain composition, they do not (and cannot) ask for terrain after structure generators - because that would include the trees in that chunk, too.
That's also the reason why you won't find a tree growing in a ravine or a cave that has broken surface.
That's also the reason why you won't find a tree growing in a ravine or a cave that has broken surface.