How to disable automatic enter after password in safari?

I'm using a 2011 Macbook Pro with High Sierra and Safari 12.1(13607.1.40.1.5) and this has just started happening since the last OS/Safari update. Highly annoying when using sites with 2FA, such as my Wordpress login.

Have we missed something, or is this intentional?

This is a new feature.

I would wait until more information is available.

• Safari

• Adds Dark Mode support for websites that support custom color schemes.

• Streamlines website login when filling credentials with Password AutoFill

• Allows push notification prompts only after interacting with a website.

• Adds a warning when an insecure webpage is loaded.

• • Removes support for the expired Do Not Track standard to prevent potential use as a fingerprinting variable; Intelligent Tracking Prevention now protects against cross-site tracking by default.
• 
  

What's new in the updates for macOS Mojave - Apple Support

I meant to elaborate more on the login problem I'm having.

When signing into Wordpress, I select my username and password from the autofill drop down, then click 'login'. The page then refreshes and asks me to refill the username and password, but after the password to add a space, the letters 'wf' (Wordfence) and a code from an authenticator app on my phone. But because Safari is immediately submitting my entry, the page keeps refreshing and asking for the code, only I'm not able to enter the code, a vicious cycle.

Sure, I can, and I will go over to Firefox, but I would prefer to stay with Safari as all my bookmarks and passwords are saved in Safari. I only really use FF for testing while developing my site, I often clear its entire cache/cookies.

I would at least like the option to choose autoenter over and above autofill. I can turn autofill off, but I would then have to manually go into Keychain to retrieve usernames and passwords.

This seems like a major oversight, Safari has just been made almost unusable overnight.

A very annoying feature.

So until more info is available, I have had to disable 2 Factor Authentication, otherwise this new 'feature' prevents me from logging into the admin area of my Wordpress website.

And I'm using High Sierra, not Mojave.