I stumbled upon a way to 'block' the addon from being useful. Hopefully you can find the reason and fix that.
Mind you, perhaps this is related to having a family account (which I do), I don't know.
The addon will show only a big white panel and no buttons/text whatsoever. Cannot get it back to life, unless restarting the browser.
Steps to reproduce:
Click the addon; fill in your master password
Go into your family account page, by doing:
Click the -> arrow on any login item which shows in the addon (on the right column)
Click Edit next (currently the right column) and presto, you are logged into your family account.
I found this to be a very fast way to do this, so I find I do this often.
Once inside your family account:
Click your profile picture and select 'Sign out'
The url you are on now is:
At this moment in time, the addon still works and the master password field shows a small icon of 1password.
Don't ask me why, but I thought that if I needed to login again, I would have to return to the normal login page for my family account.
So I thought; lets shorten the url and press enter:
Nope, that didn't show the page with the three fields: email, key and password, but still the same page with just the master password field.
Ha ofcourse, I can use the addon because it shows this tiny button in the field.
However, when you click that now, it either shows: Press Ctrl-P to open the addon, or just doesn't work.
And when you click the addon, it is now showing a white panel without any elements.
Going back in browser history to the longer url doesn't help either. Something got lost.
Hope you can figure out why.
1Password Version: Not Provided
Extension Version: Not Provided
OS Version: Not Provided
Sync Type: Not Provided