We will investigate this issue. I though it was happenning only with Batch rendering, not with standard renders as well.
It seems the DR nodes don't update correctly the camera change before rendering, but they do at end. So a possible workaround would be to launch the render, stop it inmediately and render again (this is a theory, i have not tried it). Not efficient, but probably it's worth the effort for the final renders, at least while we find a fix.