Focus fails to be at the password input box

When I am required to type in account password to unlock 1password in Firefox, the keyboard's focus is not at the password input box of the popup window (1Password's main window) .
This makes me tired because everytime I have to use my mouse to click the input box :(
It happens every time when I first try to unlock 1Password in Firefox but in Edge it works well.

1Password Version: 8.4.1
Extension Version: 2.1.4
OS Version: Windows 11