title: Webdriver doesn't open an upload window
body: <p>I try to click on an element, which opens an windows model (choose a file..).</p>
  
  <p>When I try to click on this button, no upload button is opened (But when I click on it manually it opens. Also, I see WebDriver success to find the element - the button is marked, but no window is opened.)</p>
  
  <p>I try the next, none of them works:</p>
  
  <pre><code>1. currentPopup.click();
  
  2. new Actions(driver).click(currentPopup).perform();
  
  3. JavascriptExecutor executor = (JavascriptExecutor) driver;
     executor.executeScript("arguments[0].click();", currentPopup);
  </code></pre>