Thanks for reaching out.
It seems you are using 1Password browser extension due to which you are getting password suggested pop Up.
You can try disabling the 1Password extension or disabling the auto-submit feature in the extension settings. Alternatively, you can try using a different browser or clearing your browser cache and cookies.
To prevent the B2C sign-up page from auto-submitting, you can add a custom JavaScript function to the page that disables the auto-submit behavior, and you can add continue/submit button to submit the form.
Hope this will help.
Thanks,
Shweta
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