iOS 26 - Unusual Unlock

Setup: iOS 26, iPhone 15, 1Password for iOS 8.12.5

Issue: I can often fully close/exit the app (swipe up from bottom, hold middle, flick app of top of screen), lock the phone, wait 10 sec, unlock the phone, then re-open the app, fail Face ID twice, click the key icon and the word Passwords above my keyboard, grab the password from 1Password, and unlock 1Password.

Question 1: why does my phone have access to the 1Password vault, when 1Password is locked, to unlock itself?

Question 2: I was under the impression keeping the 1Password password and master key in the vault as being okay. Is that still the case? It would appear based on the issue I describe the answer is no.

Settings: Unlock using Face ID, everything else off. Lock when device locks - on. Auto-lock on exit - 2 min.

Recreation: Often-to-always. Perhaps the 2 min is a saver? Don't think it is correct I should be able to access 1Password after unlocking the phone, if the setting is turned on to lock when the device does.