Before it was like that:
I could build corner wall on for example flaten 15.0 tile, then I could lower corner tile to for example 14.5 and flaten it. This would unflaten tile with diagonal piece of wall at 15.0 and bend it along the line of wall (no more flat triangle left out, but smooth transition).
Similar to http://i.imgur.com/wwaI72X.jpg where guy unflaten palisade tiles (4.0) by flatening adjecent tiles (2.5).
Its not perfect but properly used gives excellent results in aestetics dept. Now its not possible.
Please do not take it away.
