This has happened a few times, but hard to replicate and describe. But I have the app and unlocked, and right-click the tray to open the full application, and it comes up but it says "The password has changed please log in again" or something like that. I click it, it takes me the first-time login screen with all info filled out except the master password. I type the Master Password, click Sign In, and it says "Master password updated for the app" in blue in the corner, but sits at the login screen still. This happens multiple times, doesn't proceed. If I click the Settings gear, it takes me to the Settings page, and I can click Back and be at the main screen (unlocked) with the little blue "Master password updated for the app" still visible in the bottom left until I close it. Very odd, only happens once every few weeks but just did again...
1Password Version: 6.6.416
Extension Version: Not Provided
OS Version: Win 10 Pro
Sync Type: Families