Seen with current screened. I haven't investigated this in depth yet. So
far it looks as if it erroneously adds all /implicit/ dependencies of
the selected patches, back to the latest clean tag.
Looking at the code of askAboutDepends this behavior isn't too
surprising. We call runSelection with FirstReversed and use the
resulting left ("first") segment directly as the result. Of course this
now includes all implicit dependencies of all selected patches.