[SF][ui5-menu] Menu throws an error in the console when hovering children

[Neeeko]

Bug Description

When hovering the "Sub Menu" of a ui5-menu with Sub-menu items, the following error is thrown to the console:

Uncaught TypeError: Cannot read properties of undefined (reading 'hasChildren')

It doesn't seem to break the component behavior.

Expected Behavior

No error should be thrown when using the component.

Steps to Reproduce

1. Go to https://sap.github.io/ui5-webcomponents/playground/components/Menu/
2. Press the "Open Menu" button under the "Menu with Sub-menu items" example
3. Open the dev console
4. Move your curser over sub items multiple time, see the error in the console

Isolated Example

Context

• UI5 Web Components version: 1.6.0
• OS/Platform: MacOS
• Browser: Chrome
• Affected component: ui5-menu

Priority

• Low
• Medium
• High
• Very High

The priority indicates the severity of the issue. To set the appropriate priority consider the following criteria:

• Breaks entire application or system - High or Very High
• Accessibility issue - Medium or High
• Functional issue - Medium or High
• Visual issue - Low or Medium

Note: The priority might be re-evaluated by the issue processor.

Stakeholder Info (if applicable)

• Organization: SuccessFactors

[stbodurov]

Hi @SAP/ui5-webcomponents-topic-b,

Could you please take a look at this issue? When the mouseout and mouseover event handlers are invoked for subMenu items, the check for item.hasChildren throws an error, because item is undefined.

To reproduce, go to https://sap.github.io/ui5-webcomponents/main/playground/main/pages/Menu

Regards,
Stanislav