When accessing the api.php file with the action parameter set to "sitematrix", a list of sites come up, as expected. However, the URLs for each site listed appears like this:
when it should appear like this:
In other words, the quotation mark is included with the URL. And when it loads, an error page comes up saying that you might have wanted "http://en.wikipedia.org/wiki/%22", and it redirects you there. The fix is very simple: exclude the quotation mark.