Autofill No Longer Working on Site Recently Updated

I was having a seemingly related problem, and I uninstalled the current version, and then installed version 8.10.82.29 from the 1Password Firefox Extension Version History Page (https://addons.mozilla.org/en-US/firefox/addon/1password-x-password-manager/versions/), and that is working for me. (You also have to Manage Extension and disable auto-updates for 1password until they fix it)

Hello @tom_h! 👋

I'm sorry that you're running into issues when filling your login credentials into maryland529.com. I've just tested and when I fill the username then the password field is filled as well: 

Can you try again to see if you now see the same behaviour with the latest versions of 1Password and Chrome? If you don't then try saving a new login item for the website in 1Password and then try filling that. Let me know if the password still isn't filled.

-Dave