I am having problems getting Facebook login to work correctly in IE. The problem is intermittent. Usually, when it makes the call to FB.login, the popup appears but stays on an empty white page, XD proxy, and never runs the callback. Occasionally, the callback will run, but the window will not close - I think this may be the first time I try it after rebooting my machine (closing and opening the browser does not have the same effect).
You can see this problem on www.runescape.com/, yet with the same code on www.waroflegends.com/, the login seems to work correctly.
I have searched and found a lot of talk on the XD Proxy topic, but none of the solutions seem to work for me. I have tried adding a custom channel url and making sure the fb div is the first child of the body to no effect.