Hi,

This happens because the layout class decides the node before that hanging link is an end node in the flowchart. FlowchartLayout expects that nodes are paired - start node with end node, "start if" with "end if", "start loop" with "end loop" etc. The Arrange method does some recursive decomposition looking for such pairs, and it could skip links when the pairs don't match. You can get some idea for the expected flowchart structure from the WorkflowDesigner and JavaScript sample projects. In this particular case, FlowchartLayout will work correctly if you insert a new node before the upper two nodes to denote the start of an if/switch control block.

If you can't ensure such structure for your diagrams, you could either use LayeredLayout, or do some additional processing for links if FlowchartLayout has omitted them, for example:

layout.Arrange();

foreach (DiagramLink link in diagram.Links)
{
	PointF p = link.ControlPoints[link.ControlPoints.Count - 1];
	RectangleF r = link.Destination.Bounds;
	r.Inflate(1, 1);
	if (!r.Contains(p))
	{
		link.ReassignAnchorPoints();
		link.Route();
	}
} 

I hope that helps,
Stoyan