TYPO3 Core

I'm not sure if it matters, but 3.8.0 seems to use 3 styles: class="c-menu", "c-admin" and "c-logout" (whereas the patch only uses class="c-admin").

By the way: note that adding the TD's also re-enables the different background color and border for the active menu, which makes navigating much easier.

if ($iconMenuMode) {
$contentArray⁰[] = '<td class="c-menu">'.$alt_menuObj->topMenu($loadModules->modules,0,'',3).'</td>';
if ($BE_USER->isAdmin()) {
$contentArray¹[] = '<td class="c-admin">'.$alt_menuObj->adminButtons().'</td>';
}
$contentArray²[] = '<td class="c-logout">'.$alt_menuObj->topButtons().'</td>';
}

You have used wrong class names in your patch. Attached is a fix which will go to CVS.

Fixed in CVS.