I am attempting to display a hierarchical tree structure (eg. like an Org Chart) using the Tree Layout, Mode Orthogonal and Node Flow Direction Below in an MVVM data binding scenario.

I want the connections to always originate from the bottom of a node when connecting to a child node (and connect to the top of the child), even at the expense of making the diagram wider. Sometimes the layout engine does this, but sometimes it draws the connections to the sides.

Is there a way to control it so it always draws top/bottom connections?