Unofficial Sharing buttons don't point to the right URL when using "Page Links To" plugin

As reported in http://wordpress.org/support/topic/jetpack-sharing-module-issue-with-non-official-buttons?replies=6

If I use Jaquith's [Page Links To](https://wordpress.org/plugins/page-links-to/) plugin, and I try the unofficial sharing buttons, the sharing action doesn't work; I get a popup window with the Linked-to page, instead of a Facebook sharing dialogue that allows me to share the Linked-to page. However, it works as expected with the Official buttons: the shared URL is the linked-to URL. Also, as noted by the OP, other sharing plugins also work as expected, sharing the linked-to URL.