Comment 11 for bug 617810

Explanation to previously attached illustration:

A preserved 'transform' attribute of the lowest object (in z-order) within a transformed group seems to cause the connector endpoint to be wrongly calculated. The preserved 'transform' attribute occurs with e.g. scaled, rotated, skewed or flipped Inkscape shapes like ellipses, stars/polygons, spirals and transformed objects which have a filter effect applied.

related report (fixed in 0.48):
Bug #488338 “Diagram connectors markers misplaced when connecting to grouped objects (uses wrong bounding box)”
<https://bugs.launchpad.net/inkscape/+bug/488338>