Send me (rkinyon@cpan.org) a failing test and I'll see what can be done. I don't use that feature myself (it was added as a patch when stvn was maintaining it). I think the point was that the $dbh was reused across many sessions. *shrugs*
My criteria for good software:
Does it work?
Can someone else come in, make a change, and be reasonably certain no bugs were introduced?