We are creating a publicly (no login) form for anyone to fill out on a portal, however when I try to set the page permissions for the page it doesn't give an option for Anonymous Users. in power pages editor below the dropdown it says anyone can access the page because no role is assigned, but it still prompts for a login. In the portal editor (old editor) that text reads no role assigned no one will have access.
I have confirmed the Anonymous Users web role does exist for this page in portal management.
