Video:
https://www.screencast.com/t/lyemH3IjT 

JavaScript error "unable to get property 'handleEvent' of undefined or null reference" from Telerik.Web.Ui.WebResource.axd is thrown.

Research the ability to have the RadMenu behave responsively.

(On a related thread, there is a wider-oriented customer request for a responsive framework)

Workaround:

function OnClientItemClicking(sender, eventArgs) {
	if ($telerik.isTouchDevice) {
		if (eventArgs.get_item().get_postBack()) {
			$telerik.$('.rmRootToggle').trigger('touchend');
		}
	}
}

Version 417 - Menu works like a charm, animation goes from top to bottom (on hover) normally; 

Version 611 upgrade - Menu breaks, Animation starts from bottom to top. (on hover) This is unexpected and breaks prior application functionality; We've tried replacing the binaries from 417 to 611 and back again to confirm this.

Due to recent changes to the keyboard accessibility of the RadMenu (i.e. it is now only accessible using the arrow keys instead of moving around using tabs), mega menus are no longer keyboard accessible.

We have designed a mega menu using a telerik RadSiteMap embedded in a RadMenu control, as suggested in the Telerik Demo site: http://demos.telerik.com/aspnet-ajax/menu/examples/megadropdown/defaultcs.aspx

However, this is no longer accessible. Previously, you could open the dropdown by pressing the down button, then move around in the dropdown using tab. Now, however, pressing tab just closes the dropdown.

We need the menu to be accessible in one way or another.

While it is possible to set the item image using the item's CssClass property (http://www.telerik.com/help/aspnet-ajax/menu-appearance-item-images.html), it would be great to be able to set that directly to the span element with class rmLeftImage.

Otherwise, it's necessary to use JavaScript or a CSS pre-processor like LESS to assign font-based images via classes (LESS would be required only to avoid duplicating CSS).

The same would apply to just about any control that supports item images, e.g. TreeView.

Rendering and tabbing through the menus goes well BUT - the following was reported:

• With NVDA/Firefox, while the menu item names (File, Edit, View) are announced, but nothing is announced that lets me know that I can expand them to hear more. Usually the space and enter key are used to toggle menus, but neither of those do anything.
• With NVDA/Chrome, I get the same experience.
• With JAWS/Chrome, I hear some more info: when I’m on File, I hear File alt plus F (then Edit alt plus E, View alt plus V). It seems like the latter two of these open up the menu visually, but I’m not able to navigate to any of the items with my keyboard or hear them with my screen reader.

The BIG issue seems to be the lack of indication that a SubMenu exists - is this a known issue?  Am I not enabling something I should be?

Current RadMenu config:

  <telerik:RadMenu AriaSettings-Label="Manage a Business Menu" runat="server" ID="m" Width="100%" Skin="Simple" Flow="Horizontal" RenderMode="Lightweight"
                EnableAriaSupport="true" CausesValidation="false" EnableOverlay="false">
                <KeyboardNavigationSettings CommandKey="Alt" FocusKey="M" />
            </telerik:RadMenu>