[chase.com] - Filling isn't working

Additional data point: if I go to http://www.chase.com with the browser window full-screen, it presents a username and password field. 1Password can still autofill into this field across all major browsers--Brave (my primary), Chrome, Edge, Firefox.

My bookmark is set to a Chase login page located at https://secure.chase.com/web/auth/dashboard#/dashboard/overviewAccounts/overview/index. You can also reach this page by clicking the Sign in button at http://www.chase.com without entering credentials. If you visit http://www.chase.com in a browser window sized somewhat smaller, the username and password field goes away, and you can only click the Sign in button to reach this link at secure.chase.com. I experience the failed autofill behavior on the login page located at the secure.chase.com link, across all browsers.