When parsing pages that are redirect pages, Parsoid includes a PageProp with the redirect target, that is URI-encoded. However, the % symbol in the redirect target is not URI-encoded, which creates invalid URIs.

Example:
https://en.wikipedia.org/w/index.php?title=100%25_Pure_New_Zealand&redirect=no

Produces:

<link rel="mw:PageProp/redirect" href="./Tourism_New_Zealand#%22100%_Pure_New_Zealand%22" id="mwAg"/>

Note how the " symbol in the redirect target is encoded, while the % symbol is not.