mozilla/browserid — Issue #804: IE8: Cancelling a "Use a different email" path closes the pop-up
Author: jbonacci
Created: 2011-12-23 02:47:17+00:00
State: open

Instead of going back to the "sign in" content on the pop-up, the pop-up is actually closed.
If you click Sign In from the RP, though, you will be right back where you left off, with the choice of signing in with the current email, adding a new email, or saying "this is not me".

Interesting...