Preferences: Setting Passphrase time doesn't work, user must close app intentionally to activate
1. Launch app and navigate past Welcome and Info screens
2. Tap on overflow menu button and select Preferences
3. Tap Login
4. Select Immediately or 1 minute as the time
5. Return to device homescreen and launch app at appropriate time according to the interval you selected
Expected: Passphrase screen is shown and required before user can access app content
Actual: Passphrase is never required unless user closes the app from the activity list or by force closing.