Please, add an option to lock edge anchors when rerouting.
As an example, let's say I have an edge between a square node, anchored at the bottom, and a diagonal node, anchored at the left corner. I would like to call orthogonal/polyline reroute while preserving the origin and terminus of the edge. However, the rerouting algorithm move these endpoints.
NOTE: Please, ignore this. I just discovered port constraints.