Quite. They have me tied by email address to Facebook and I'm 200% certain that my email address there is not "publicly-available information".
Facebook permitting this app to operate will give it serious legal trouble in the EU.
Facebook permitting this app to operate will give it serious legal trouble in the EU.
Methinks they may be simply attempting to log in with that email as your username... maybe Facebook returns a different error depending on non-existent username vs. wrong password. Very dumb of FB in that case, and must be fixed.