I use HTTPS Everywhere in Firefox, and so all of my requests to Wikipedia (among other sites) get automatically re-directed by the browser to their secure site. This gives me headache when I want to post an article to chat, and have it Oneboxed.
Onebox works fine for me on regular Wikipedia links like this one:
But fails to recognize the secure pages like this one:
The only ways around this for me are to either disable Wikipedia redirection in HTTPS Everywhere, or search for and load the page in IE and copy the link from there.
Is it SSL that breaks the Onebox, or does Onebox just not recognize addresses from the secure site? If the latter, can a simple change be made to add this in?