1Password always asks for master password when "Require Master Password" is not set to "Never"

Hi @RobMendez thanks for following up. If you've changed your Security settings in 1Password as I described above (leaving Biometric unlock on is fine) the app will stay open until it is closed by the user or the system. I asked about Samsung because their battery optimization features can be quite persistent. OnePlus can be persistent as well shutting apps down in the background.

With battery optimization already off, you can also try locking the 1Password to recents: Open and unlock 1Password, open recents, long press the 1Password window, tap Lock.