When the Account Settings Dialog is opened in the Mail Task window, inputs are not correctly handled in a regular mozilla browser window at the same time. For instance, open Mozilla. Start the mail task. Open the Account Settings Dialog. Alt-Tab (taskswitch) back to the mozilla browser window. You should be able to browse normally. Instead, most all keystrokes and mouseclicks are ignored. The only exception I noted was clicking on a URL which did still work. Scrollbars and form elements were however unusuable.
Probably same as http://bugzilla.mozilla.org/show_bug.cgi?id=22720.
Sorry I missed that in my pre-bug filing search. I think it is definately the same thing that I was talking about. *** This bug has been marked as a duplicate of 22720 ***
I filed it and I'm verifying it was a dup when it was filed.