I think you should open the developer tools (F12) in IE9 and check the console for any JavaScript errors that might be affecting the menu's functionality.
Inspect the CSS styles applied to the menu. Some CSS properties may not be fully supported in IE9, which can cause layout issues. Validate the HTML code for any errors that might affect how the page displays in IE9.
If the menu relies on modern CSS or JavaScript features, consider adding fallbacks for IE9.
5.62.63.122