In the main menu, the submenu nav-submenu doesn't visually open by keyboard in mobile view

[rianrietveld]

The items in the submenu of Support in the header menu are not visibly open when tabbing through them using a keyboard. They are visible using the menu in desktop view.

<li class="menu-item">
    <a href="//wordpress.org/support/" title="Forums, documentation, help.">Support</a>
    <ul class="nav-submenu">
        <li class=""><a href="//wordpress.org/support/" title="Support and discussion forums.">Forums</a></li>
        <li class=""><a href="//codex.wordpress.org/Main_Page" title="Documentation, tutorials, best practices.">Documentation</a></li>
     </ul>
     <div class="uparrow"></div>
</li>

[dufresnesteven]

What about extending the menu full width and chevrons for items with subitems?

[dufresnesteven]

Disregard the sub item alignment and the "Five for the Future" appearing as a main menu item in the image above.

[ben.greeley]

It appears this ticket may have been resolved with the new header. I'm able to tab to the dropdown menu and open with the keyboard.