AntiforgeryToken adds X-Frame-Options per token, resulting in large header size, causing error 520 in CloudFlare

Antiforgery-X-Frame-Options.txt

// AntiForgeryToken automatically adds x-Frame-Options SAMEORIGIN for each token
// resulting in 
// X-Frame-Options	SAMEORIGIN, SAMEORIGIN, SAMEORIGIN, SAMEORIGIN, SAMEORIGIN, SAMEORIGIN, SAMEORIGIN....
// This happens when there is update form inside the list and each update form have Antiforgerytoken
// If hosted on CloudFlare, this will produce Error 520, if header size becomes larger than 32KB
// Adding following will fix the issue.
// Global.ascx.cs
    protected void Application_Start()
    {
        AntiForgeryConfig.SuppressXFrameOptionsHeader = true;
        // rest of the code 
    }
  
  // add back single x-frame-options in web.config, because above code will not include any x-frame options
    
  // web.config
    <system.webServer>
     <httpProtocol>
    <customHeaders>
      <add name="X-Frame-Options" value="SAMEORIGIN" />
    </customHeaders>
  </httpProtocol>
  // rest of the configuration
  </system.webServer>