2.2.3 [W3C-HTML52] Section 2.6.3. Encrypted HTTP and related security concerns

C0004: There is no warning if the user visits a page that uses less secure encryption than it did on a prior visit by that user

The specification states:

 2.6.3 Encrypted HTTP and related security concerns
     ...
     User agents should warn the user that there is a potential problem whenever the user 
     visits a page that the user has previously visited, if the page uses less secure 
     encryption on the second visit.

EdgeHTML Mode

There is no warning if the user visits a page that uses less secure encryption than it did on a prior visit by that user.