The "Referrer-Policy" HTTP header is not set to "no-referrer"

Set
Header set Referrer-Policy “no-referrer”
in your .htaccess

On my installation it looks like this:

  <IfModule mod_env.c>
    # Add security and privacy related headers
    Header set X-Content-Type-Options "nosniff"
    Header set X-XSS-Protection "1; mode=block"
    Header set X-Robots-Tag "none"
    Header set X-Download-Options "noopen"
    Header set X-Permitted-Cross-Domain-Policies "none"
    Header set Referrer-Policy "no-referrer"
    SetEnv modHeadersAvailable true
  </IfModule>
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