While testing #27733 I discovered a new accessibility issue with the show password button. When you press the button the password is revealed - which is correct. But there is no indicator that this has happened to a non sighted user.

After looking around to see how others address this I see it is a common failure (but that's not a reason for us not to fix it if we can)

The best example I have seen is with google and it is really very simple.

On selecting the show password button the focus is redirected to the password field