You can't see that issue in the tracker because it has been marked as a (minor) security issue - it will be hidden until 1.9.3 is released. That is probably a bit overzealous on someone's part. Still, it looks like you correctly found what needs to be changed.
General developer forum
Firefox 3 password remembering gets confused by Moodle
This discussion has been locked so you can no longer reply to it.