I have used WP nav menu in my website. It works fine. I have added the sub link under the home link. But it is not properly displayed. Please refer the screenshot.
In the above image, "support our work" sub link is fine. But the Home sub link is not properly displayed. I need "News, Calendar, Like Us On FaceB" displays under the HOME link similar to "Support our work". Home Page does not accept the sub links.