In the past year, I have not seen an aware login form, either the default one or ones that I have customized, do what you say.
I always use chrome, and the only thing that happens is if you click on it a list of pre-saved field choices will be available.
Having said that, the only site that I regularly use that does this does this: https://mail.ionos.com/
For me, it takes about a second for it to pop up my user ID and password.
But it doesn’t do that on aware.
Yahoo does, but not the big grocery chain Publix.com
So, stuffing critical that I ever worried about in a nowhere page. I think I’ve always had to at least click on the field to activate the password managers history.