When #REDIRECT[[Target]] appears in the wikitext but on the first line it will render as a list and not trigger the redirect functionality. While clients to probably keep the <link rel="mw:PageProp/redirect" stays at the top of the document, Parsoid should also handle cases where it gets moved.
Currently
<p>Foo</p> <link rel="mw:PageProp/redirect" href="./Bar">
doesn't survive a round-trip.