This is the exception. If you view someone’s Story, your name will appear in their "viewers" list. If the story is public, even non-followers may show up by name if they are logged in.
Downloading software or extensions can infect your computer or phone, exposing your banking details and personal data. facebook anonymous viewer profile
: Some public content can be viewed without even logging into a Facebook account, which prevents any tracking on your personal account. This is the exception