I would like to report that automatic generate of connection point for Bezier connection is wrongly generated when link is attached to Gliding Connector.
Connection point is generated at the position where link is attached to shape. I think for such use-case you should generate connection point taking into account angle of link in relate to shape and generate connection point a bit moved. When connection point is generated at attach position it makes that the "arrow" of link have wrong angle.
I'm attaching video and your sample solution with my modifications to easier reproduction.