HTML5 HTTP response Headers

Hello, I’m making a http request. Everything is working great in Editor. but in HTML5 no matter what type of request I make and no matter what response I provide, the IHttpResponse object contains no headers.

TSharedRef<IHttpRequest> Request = FHttpModule::Get().CreateRequest();
Request->SetURL(Url + UrlSuffix);
Request->OnProcessRequestComplete().BindUObject(this, &UServerProxy::OnRequestCompleted);

### UServerProxy::OnRequestCompleted
UE_LOG(LogTemp, Warning, TEXT("Header Content-Type: %s"), *Response->GetContentType());
for (FString Header : Response->GetAllHeaders())
    UE_LOG(LogTemp, Warning, TEXT("Header: %s"), *Header);

I am stuck on the same issue. I need to access the response headers on an HTTP request, and, although in the Win64 or Mac export platforms it works as it should, the HTML5 export does not seem to have access to the response headers. Tested in 4.12 and 4.13.