Using latest beta (4.2b5).
PIN Code: Off
Lock on Exit: Off
Auto Lock After: 30 minutes
Auto Clear Clipboard: 3 minutes
1) Use task manager to terminate all running apps (to give a clean system with no memory load issues).
2) Tap 1Password icon
3) Enter master password
4) Press home key
5) Tap 1Password icon
App is redisplayed in the state I left it.
I am now required to enter my master password again.
I understand that switching away from the app may result in it being forcibly unloaded if the system needs more resources but with nothing else running this seems like odd behaviour.