When launching 1password app or app extension with Touch ID enabled, if you are touching the home button the app unlocks before the pop up telling you to use Touch ID comes up. So then the only option is cancel which leaves the app in a frozen state waiting for master password but already unlocked. Only fix is to press the hardware lock button and then unlock and wait for the prompt before touching home button for Touch ID.
It's reproducable. Just launch the app while resting a finger on the home button.