Aspnetcore: Response cache does not work for the view that contain form element

Response cache does not work on the following method which returns view containing a form element.If the form element is removed from the view then response cache works. why it is happening?

```
[Route("Contact")]
[ResponseCache(Duration = 3600)] //Does not working for this method
public IActionResult Contact()
{
return View();
}

[HttpPost]
[Route("Contact")]
public IActionResult Contact(ContactViewModel contactViewModel, IFormFile attachment)
{
    //Necessary opertaion goes here
    return
    View(contactViewModel);
}

```