title: WebView not reloading page with identical URL
body: <p>JavaFX shows some odd behaviour when loading a page that has an identical url to a page that has been loaded before. The code below demonstrates this issue:</p>
  
  <p>After class initalization a page is loaded, then a highlight is applied to an arbitrary html element using a custom style class. This highlight is rendered correctly.</p>
  
  <p>Finally, through user input event, the WebView is told to load a new page (with the same URI). Instead of showing the page as-is, the highlight is shown as well.</p>
  
  <pre><code>WebView webView = new WebView();
  static String URI = "http://www.example.com";
  
  public void loadPage() {
      // Step 1: load page
      webView.getEngine().load(URI);
  
      // Step 2: Change style attribute in page
      (Element) element = xpath.evaluate("//div[@id='mydiv']", webView.getEngine().getDocument(), XPathConstants.NODE);
      element.setAttribute("class", "mystyle");
  }
  
  handle() {
      // Step 3: load page again
      webView.getEngine().load(URI);
  }
  </code></pre>
  
  <p>I have experimented with forcing the page to reload with WebView.getEngine().reload(), disabling cache, waiting for workers to complete, etc.</p>
  
  <p>The only option I currently see is to create a new instance of the WebView, but as this is pretty CPU heavy, I prefer to reuse the object rather than creating it new every time I want to revert to the original page.</p>