I have a 1Password Family subscription. I am running 1PasswordX (1.15.6) on the latest Stable Chrome (75.0.3770.142) on a number of computers (macOS 10.14.5) and Ubuntu Linux 19.04, and the Beta channel ChromeOS on a Chromebook. I enabled 2FA yesterday and added a couple security keys as well.
I have two issues:
1PasswordX requires multiple auth attempts to re-enable
As expected, I've had to reauthenticate to all of my previously set-up devices. Setting up 1PasswordX has been slightly problematic.
I've tested this, so far, on two Macs, the Linux box, and a Chromebook. The Chromebook and Linux box were especially annoying as I don't have a 1Password native app installed and so had to retype the long secret key twice. I can test this on a windows 10 machine late tonight.
1PasswordX requires a U2F key if one has been enabled for the account, while apps require an app-generated passcode.
This is unlike the behavior I've seen to reauthenticate on apps, where it asks me for a 6-digit passcode, and has no option to use a U2F key. There seems to be no option to use the authenticator app code on 1PX on Chrome if a key has been set up. Note that I did not attempt to enable any additional devices between setting up the passcode app, and adding U2F keys.
1Password Version: Not Provided
Extension Version: Not Provided
OS Version: Not Provided
Sync Type: Not Provided