Facebook link proxy not working
When opening a link within Facebook (https-everywhere enabled for Facebook), it will be proxied through a l.facebook.com page. This page will be accessed by insecure HTTP. It doesn't redirect you automatically, so you have to confirm that you want to follow the link you clicked. This button isn't working. Disabling https-everywhere for Facebook fixes this issue. Also changing the link to an HTTPS link fixes the problem, redirecting you automatically.
I think appending l.facebook.com to the HTTPS-enforced sites will fix this issue.
Furthermore, the issue has appeared after Facebook's design has been drastically changed to a more blue colour.