I switched to the 1Password app on my phone accidentally, and so I quickly hit the Android system Navigation button at the bottom to switch to the correct app, but 1Password had already shown its facial recognition bar at the bottom. I think it got into a confused state because the facial recognition UI never went away (despite looking right at my phone), but I also couldn't interact with anything on screen (it was shaded out). Eventually my screen just timed out and when I turned my phone back on and unlocked it, everything was fine. But it was in a weird state in between.
1Password Version: 7.7.4
Extension Version: Not Provided
OS Version: Android 11
Sync Type: Not Provided