Comment 4 for bug 716145

@Christian Lehmann: AFAICT the relevant difference in your sample file is in whether the connected object (or one of its contained objects if it is a group) has a 'matrix()' transformation stored in the 'transform' attribute or not.

See e.g. comments #9 and #10 of bug #617810 which illustrate and describe one aspect of such a 'transform'-related issue.