Entering recovery passphrase to participate in key backup was unresponsive.

I logged in, entered my recovery passphrase, and hit 'Done' on the keyboard. Nothing happened. I pressed it a few more times. Nothing happened. I hid the keyboard and hit the 'Unlock History' button, and nothing happened, a few more times. I then deliberately typoed the passphrase to see if that would change anything. Then suddenly it took me to a "enter recovery key" screen. I then hit back. Then it started restoring the backup: "Computing recovery key" with a big status dialog box. :/