title: Microsoft Edge does not fire UIA HandlePropertyChangedEvent when window title property changes
body: <p>I'm trying to get notified when the Window title of an MS Edge browser window changes using UIAutomation but the property changed event is not firing as I would expect.</p>
  <p>The code works for IE, Chrome and FireFox and the only noticeable difference I can see when inspecting the window using Accessibility Insights is that they implement the IUIAutomationLegacyIAccessiblePattern interface and MS Edge does not but as I can see the property changing I would still expect the event to fire.</p>
  <p>Before I go looking for a work around e.g. using SetWindowHook to trigger the title change event I'm wondering if there is a small change I can make to get MS Edge working?</p>
  <p>Here is a how I'm creating the handler</p>
  <pre><code>     IUIAutomationElement rootElement = _uIA.GetRootElement();
  
       IUIAutomationCacheRequest cacheRequest = _uIA.CreateCacheRequest();
       cacheRequest.AddProperty(UIA_NamePropertyId);
  
       IUIAutomationCondition windowCondition = _uIA.CreatePropertyCondition(UIA_NativeWindowHandlePropertyId, handle);
       IUIAutomationElement windowElement = rootElement.FindFirstBuildCache(TreeScope.TreeScope_Descendants, windowCondition, cacheRequest);
       if (windowElement == null)
            return false;                                                                          
                                                                                                   
       int[] props = { UIA_NamePropertyId };
  
       _uIA.AddPropertyChangedEventHandler(windowElement, TreeScope.TreeScope_Element, cacheRequest, this, props);
  </code></pre>
  <p>The code works fine for getting the window and I can see the title chaging on the windowElement.CacheName it just never fires the HandlePropertyChangedEvent.</p>
  <p>To clarify I'm using a wrapper around uiautomationclient and not the .net automation framework</p>