Comment 151 for bug 357864

When I select an identity, click "Customize From Address", and edit it, I then can still select other identities, and they will apply. That's good.
But when I select the same identity that I originally selected, I do not return to the original From address, but my edited one stays. That's odd. I'd argue that all dropdown entries should behave the same and reset the edit field's value. However, that's a minor thing and also debatable. I wouldn't hold the commit for that.