Just noticed today when opening 1Password on Windows, and browser extension for Firefox:
Windows Security pops up and asks if it really me and asks me to Enter My Pin to unlock 1Password. I don't think this was part of the plan. If I press cancel, it takes me to the Master Password, however, if I enter the Windows PIN, it unlocks 1Password.
1Password Version: 7.4.753
Extension Version: 18.104.22.168
OS Version: Windows 1909
Sync Type: Not Provided