Authentication sometimes fails in IE

[justincy]

https://groups.google.com/a/ldsmail.net/d/msg/FSDN/5bVYBonGzwA/cBxdLu-XAQAJ

We need to figure out under what conditions the auth popup fails in IE and whether we can fix it.

[jimmyz]

I know Ancestry.com handles the OAuth2 flow through a pop-up window and that it works cross-browser. I believe the strategy is different in that it redirects to a real URI that responds to complete the OAuth2, posting the auth code for the access token. I suspect that the pop-up window then has a callback function that it calls to its parent window to complete the flow.

[justincy]

Strangely, authentication works on the sample app in IE: https://fs-javascript-sdk-sample-app.herokuapp.com/examples/authentication

[justincy]

This problem seems to be rare and we no longer have a reproduction of the bug. We'll have to let this sit until it comes up again.