Why can't I click on the confirm box when encrypting a partition in the Fedora 18 or Fedora 19 installer (anaconda)?

If you are having trouble clicking or switching to the "confirm" box when typing in your passcode/password in the Fedora 18 or Fedora 19 installer, here's what you can do:

1. Ensure that your passcode is strong enough. Make sure that the red stop sign disappears.
2. Press "Tab" on the keyboard to switch to the "confirm" box.

That's it.