Bug report

The sub items in a Menu only open the first time in IE when scrollable is set to true.

Reproduction of the problem

1. Open this Dojo example in IE - https://dojo.telerik.com/epUjAzaM/3
2. Hover a subitem in Item 1 or Item 2
3. Hover the subitem once again

Current behavior

The subitems open only the first time

Expected/desired behavior

The subitems should open every time you hover them

Environment

• Kendo UI version: 2021.3.914
• Browser: [IE]

When new item with sub-items is appended or inserted (before/after) into kendoMenu or kendoContextMenu then "aria-expanded='false'" text surprisingly appears right to the new item. This defect can be reproduced just by running the demos published for kendoContextMenu or kendoMenu's methods such as append, insertAfter or insertBefore, or as shown bellow. The defect is reproduced on Windows and Linux, as well as on Firefox, Chrome and Edge.

Bug report

When openOnClick is enabled for the root Menu items and also the scrollable option is enabled, when moving the cursor over different subitems, previously hovered remains opened.

Reproduction of the problem

1. Open the Dojo
2. Click on Item 2
3. Hover over Sub Item 1
4. Hover over Sub Item 1.2
5. Move the cursor to hover over Sub Item 2

Current behavior

Both submenus remain opened - the one for SubItem 1 and for SubItem 2

Expected/desired behavior

The previously opened submenu (Subitem 1) should get closed.

Environment

• Kendo UI version: 2021.2.511
• Browser: [all ]

The contextMenu is not acessible. Upon opening, it should capture the keyboard focus and allow navigation by arrow keys, but it does not. (It can be observed here.)

Keyboard use of the contextMenu is also not documented. Keyboard use of the menu is documented here, while the contextMenu is separately documented here.

Bug report

Currently, when an item is expanded in the Menu, the screen readers do not read which item/subitem is expanded. The 'aria-expanded' attribute is not added to the Menu.

https://www.w3.org/TR/wai-aria-practices/examples/menubar/menubar-1/menubar-1.html

Reproduction of the problem

1. Open the demos
2. Focus on the Menu and expand an item.

Current behavior

The 'aria-expanded' is not added to the Menu and the screen readers do not inform which item is expanded

Expected/desired behavior

The screen readers should be able to read which item is expanded in the Menu.

Environment

• Kendo UI version: 2021.1.119
• Browser: [all ]

I'm having resize issues with the Menu control that I cannot sufficiently document at this time (my menu is inside a splitter, it's horizontal and it should be scrollable, but the arrows don't always appear).

I tried working around them by manually forcing a resize. Per documentation:

Each Kendo UI widget has a resize() method which can be used to trigger a layout readjustment instead of using kendo.resize. The resize method of the widget accepts a single Boolean parameter, which defines whether the control should execute its layout adjustment algorithm even if the widget dimensions have not changed ("force" mode).

However, the Menu widget does not override this method. It only binds to the Window resize event:

$(window).on(RESIZE, kendo.throttle(function(){
	that._setOverflowWrapperWidth(initialWidth, initialCssWidth);
	that._toggleScrollButtons(that.element, backwardBtn, forwardBtn, isHorizontal);
}, 100));

It's highly probable that the magic value 100 does not fit my use case. However, I cannot force a resize neither by:

1. calling resize() on the widget
2. calling resize(true) on the widget
3. calling kendo.resize() on the container.

Possibly related to https://github.com/telerik/kendo-ui-core/issues/4067 .

### Bug report
Sub Menu item is not opened, if hovered before close animation of another sub-menu-items's child item completes.
Reported in ticket ID 1473199, where a reproduction video is available.

### Reproduction of the problem
1. Run the following [Dojo snippet](https://dojo.telerik.com/@Dimitar-Goshev/EfEmoCon)

1. Hover Item 1, then hover Sub Item 4

1. Hover Sub Item 41 to expand its sub item

1. Quickly move the mouse from SubItem 41 to Sub Item 4 text and then to Sub Item 3 text

### Current behavior
Sub Item 3 is NOT expanded and its child items are NOT visible

### Expected/desired behavior
Sub Item 3 is expanded and its child items are visible

### Environment
* **Kendo UI version:** 2020.2.617
* **Browser:** all

Bug report

Reproduction of the problem

Dojo example.

1. Click "Test1" and immediately hover "Sub Item 1"

Current behavior

The sub-menu of "Sub Item 1" does not open.

If the behavior is not exhibited on the first test, click another of the root items and repeat, or reload the example and try again. The issue is more easily reproducible in IE, however it occurs in Chrome and Firefox as well. For more details and a video demonstrating the issue, refer to Ticket ID: 1472421

Expected/desired behavior

Sub menus open consistently.

Environment

• Kendo UI version: 2020.2.617
• jQuery version: x.y
• Browser: [all]

I prepared a dojo example. https://dojo.telerik.com/oKIkuCaP

As can be seen from example, the MVVM context menu seems to ignore data-copy-anchor-styles option.

Current solution for us is to extend the kendo.ui.ContextMenu and set the copyAnchorStyles option to false.

Bug report

Reproducible with version 2017.2.504 (R2 2017) and newer.

Reproduction of the problem

Dojo example.

1. Open a submenu in the top Menu (it has scrollable: true set).

Current behavior

Separators are not displayed.

Expected/desired behavior

Separators are displayed.

Workaround:

.k-menu-scroll-wrapper .k-menu-group .k-separator {
  border-bottom: 1px solid #c5c5c5;
  width: 100%;
}

Environment

• Kendo UI version: 2019.3.917
• jQuery version: x.y
• Browser: [all ]

Bug report

Defining a custom namespace with Kendo.ns stops the displaying of all submenus in the Menu component.

This is a regression represented in R2 2019

Reproduction of the problem

1. Open this Dojo and run it.
2. The Menu component is being rendered
3. Move the mouse cursor over the Menu.
4. A thin grey line appears under each section of the Menu. No submenus are being displayed

Expected/desired behavior

The Menu component should work properly even when a custom Kendo namespace is being defined. To see the expected behavior put a comment on the following line:
kendo.ns = "kendo-";

Environment

• Kendo UI version: 2019.2.619
• jQuery version: x.y
• Browser: [all]

Bug report

Removing non-existing item from ContextMenu throws a Javascript Error

Uncaught TypeError: Cannot read property 'parentsUntil' of undefined

This is regression introduced in R2 2019

Reproduction of the problem

Open this Dojo and run it. Open the browser's console and see the error.

Expected/desired behavior

When removing a non-existing item from a ContextMenu no error should be thrown.

Environment

• Kendo UI version: 2019.2.514
• jQuery version: x.y
• Browser: [all]

Nested Menu items are not being expanded the first time that they are hovered:

https://dojo.telerik.com/EcEsoNAK

Bug report

The usage of $.uniqueSort() in jQuery 1.10.x throws an error in multiple components like Menu, DropDownList, DropDownTree, and TreeView.

Related to #4665

Reproduction of the problem

1. Open this Dojo and try to use some of the components in it.
2. Error messages appear in the console and the components get stuck

Current behavior

Expected/desired behavior

All components should work properly no matter of the jQuery version used.

To see the expected behavior change
<script src="https://code.jquery.com/jquery-1.11.1.min.js"></script>
to
<script src="https://kendo.cdn.telerik.com/2019.2.514/js/jquery.min.js"></script> in the provided Dojo.

Environment

• Kendo UI version: 2019.2.514
• jQuery version: 1.10.x
• Browser: [all]