Hi,

FlowchartLayout expect the diagram to consist of three kinds of constructs embedded recursively within each other - loops, branches and sequences. Loops and branches should contain matching start and end nodes, not shared with other loops or branches.

If your diagrams do not conform to that structure, the layout method won't process some nodes and links, leaving them at their initial positions. In such case better use LayeredLayout with StraigtenLongLinks and EnforceLinkFlow properties enabled.

If you still prefer to use FlowchartLayout, you will have to implement some additional processing. E.g. if you do not have distinct end nodes for loops or branches, you could add temporary ones only to help the layout method decompose the graph into those basic constructs, and remove them afterwards. Another possibility is to detect the unprocessed links and set their ControlPoints or call their Route method to fix them.

I hope that helps,
Stoyan