Index: src/wp-admin/css/nav-menus.css
===================================================================
--- src/wp-admin/css/nav-menus.css	(revision 36220)
+++ src/wp-admin/css/nav-menus.css	(working copy)
@@ -61,10 +61,6 @@
 	position: relative;
 }
 
-.blank-slate .menu-name {
-	height: 2em;
-}
-
 .blank-slate .menu-settings {
 	border: none;
 	margin-top: 0;
@@ -180,7 +176,10 @@
 }
 
 #nav-menu-header .menu-name-label {
-	margin-top: 4px;
+	display: inline-block;
+	vertical-align: middle;
+	margin-right: 7px;
+	font-style: italic;
 }
 
 .nav-menus-php #post-body div.updated,
@@ -253,20 +252,6 @@
 	border-right: 1px solid #ccc;
 }
 
-#wpbody .open-label {
-	display: block;
-	float:left;
-}
-
-#wpbody .open-label span {
-	padding-right: 10px;
-}
-
-.js .input-with-default-title {
-	color: #a0a5aa;
-	font-style: italic;
-}
-
 #menu-management .inside {
 	padding: 0 10px;
 }
@@ -273,7 +258,7 @@
 
 /* Add Menu Item Boxes */
 .postbox .howto input,
-.accordion-container .howto input {
+.customlinkdiv .menu-item-textbox {
 	width: 180px;
 	float: right;
 }
@@ -282,10 +267,6 @@
 	margin: 0;
 }
 
-.customlinkdiv .howto input {
-	width: 180px;
-}
-
 .customlinkdiv p {
 	margin-top: 0
 }
@@ -366,6 +347,7 @@
 /* Create Menu */
 #menu-name {
 	width: 270px;
+	vertical-align: middle;
 }
 
 #manage-menu .inside {
@@ -392,10 +374,10 @@
 	width: 180px;
 }
 
+.customlinkdiv label,
 .nav-menus-php .howto span {
+	float: left;
 	margin-top: 6px;
-	display: block;
-	float: left;
 }
 
 /* Menu item types */
@@ -742,14 +724,12 @@
 /* Major/minor publishing actions (classes) */
 .nav-menus-php .major-publishing-actions {
 	clear: both;
-	padding: 3px 0 6px;
+	padding: 7px 0 6px;
 }
 
 .nav-menus-php .major-publishing-actions .publishing-action {
 	text-align: right;
 	float: right;
-	line-height: 23px;
-	margin: 4px 0 1px;
 }
 
 .nav-menus-php .blank-slate .menu-settings {
Index: src/wp-admin/includes/nav-menu.php
===================================================================
--- src/wp-admin/includes/nav-menu.php	(revision 36220)
+++ src/wp-admin/includes/nav-menu.php	(working copy)
@@ -264,17 +264,13 @@
 	<div class="customlinkdiv" id="customlinkdiv">
 		<input type="hidden" value="custom" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-type]" />
 		<p id="menu-item-url-wrap">
-			<label class="howto" for="custom-menu-item-url">
-				<span><?php _e('URL'); ?></span>
-				<input id="custom-menu-item-url" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-url]" type="text" class="code menu-item-textbox" value="http://" />
-			</label>
+			<label class="howto" for="custom-menu-item-url"><?php _e( 'URL' ); ?></label>
+			<input id="custom-menu-item-url" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-url]" type="text" class="code menu-item-textbox" value="http://" />
 		</p>
 
 		<p id="menu-item-name-wrap">
-			<label class="howto" for="custom-menu-item-name">
-				<span><?php _e( 'Link Text' ); ?></span>
-				<input id="custom-menu-item-name" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-title]" type="text" class="regular-text menu-item-textbox input-with-default-title" title="<?php esc_attr_e('Menu Item'); ?>" />
-			</label>
+			<label class="howto" for="custom-menu-item-name"><?php _e( 'Link Text' ); ?></label>
+			<input id="custom-menu-item-name" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-title]" type="text" class="regular-text menu-item-textbox" />
 		</p>
 
 		<p class="button-controls">
@@ -435,7 +431,8 @@
 			}
 			?>
 			<p class="quick-search-wrap">
-				<input type="search" class="quick-search input-with-default-title" title="<?php esc_attr_e('Search'); ?>" value="<?php echo $searched; ?>" name="quick-search-posttype-<?php echo $post_type_name; ?>" />
+				<label for="quick-search-posttype-<?php echo $post_type_name; ?>" class="screen-reader-text"><?php _e( 'Search' ); ?></label>
+				<input type="search" class="quick-search" value="<?php echo $searched; ?>" name="quick-search-posttype-<?php echo $post_type_name; ?>" id="quick-search-posttype-<?php echo $post_type_name; ?>" />
 				<span class="spinner"></span>
 				<?php submit_button( __( 'Search' ), 'button-small quick-search-submit button-secondary hide-if-js', 'submit', false, array( 'id' => 'submit-quick-search-posttype-' . $post_type_name ) ); ?>
 			</p>
@@ -714,7 +711,8 @@
 			}
 			?>
 			<p class="quick-search-wrap">
-				<input type="search" class="quick-search input-with-default-title" title="<?php esc_attr_e('Search'); ?>" value="<?php echo $searched; ?>" name="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" />
+				<label for="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" class="screen-reader-text"><?php _e( 'Search' ); ?></label>
+				<input type="search" class="quick-search" value="<?php echo $searched; ?>" name="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" id="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" />
 				<span class="spinner"></span>
 				<?php submit_button( __( 'Search' ), 'button-small quick-search-submit button-secondary hide-if-js', 'submit', false, array( 'id' => 'submit-quick-search-taxonomy-' . $taxonomy_name ) ); ?>
 			</p>
Index: src/wp-admin/js/common.js
===================================================================
--- src/wp-admin/js/common.js	(revision 36220)
+++ src/wp-admin/js/common.js	(working copy)
@@ -913,6 +913,9 @@
 	aria_button_if_js();
 
 	$document.on( 'wp-pin-menu wp-window-resized.pin-menu postboxes-columnchange.pin-menu postbox-toggled.pin-menu wp-collapse-menu.pin-menu wp-scroll-start.pin-menu', setPinMenu );
+
+	// Set initial focus on a specific element.
+	$( '.wp-initial-focus' ).focus();
 });
 
 // Fire a custom jQuery event at the end of window resize
Index: src/wp-admin/js/nav-menu.js
===================================================================
--- src/wp-admin/js/nav-menu.js	(revision 36220)
+++ src/wp-admin/js/nav-menu.js	(working copy)
@@ -30,6 +30,7 @@
 		menusChanged : false,
 		isRTL: !! ( 'undefined' != typeof isRtl && isRtl ),
 		negateIfRTL: ( 'undefined' != typeof isRtl && isRtl ) ? -1 : 1,
+		lastSearch: '',
 
 		// Functions that run on init.
 		init : function() {
@@ -40,7 +41,6 @@
 
 			this.attachMenuEditListeners();
 
-			this.setupInputWithDefaultTitle();
 			this.attachQuickSearchListeners();
 			this.attachThemeLocationsListeners();
 
@@ -444,28 +444,28 @@
 			// Where can they move this menu item?
 			if ( 0 !== position ) {
 				thisLink = menuItem.find( '.menus-move-up' );
-				thisLink.prop( 'title', menus.moveUp ).css( 'display', 'inline' );
+				thisLink.attr( 'aria-label', menus.moveUp ).css( 'display', 'inline' );
 			}
 
 			if ( 0 !== position && isPrimaryMenuItem ) {
 				thisLink = menuItem.find( '.menus-move-top' );
-				thisLink.prop( 'title', menus.moveToTop ).css( 'display', 'inline' );
+				thisLink.attr( 'aria-label', menus.moveToTop ).css( 'display', 'inline' );
 			}
 
 			if ( position + 1 !== totalMenuItems && 0 !== position ) {
 				thisLink = menuItem.find( '.menus-move-down' );
-				thisLink.prop( 'title', menus.moveDown ).css( 'display', 'inline' );
+				thisLink.attr( 'aria-label', menus.moveDown ).css( 'display', 'inline' );
 			}
 
 			if ( 0 === position && 0 !== hasSameDepthSibling ) {
 				thisLink = menuItem.find( '.menus-move-down' );
-				thisLink.prop( 'title', menus.moveDown ).css( 'display', 'inline' );
+				thisLink.attr( 'aria-label', menus.moveDown ).css( 'display', 'inline' );
 			}
 
 			if ( ! isPrimaryMenuItem ) {
 				thisLink = menuItem.find( '.menus-move-left' ),
 				thisLinkText = menus.outFrom.replace( '%s', prevItemNameLeft );
-				thisLink.prop( 'title', menus.moveOutFrom.replace( '%s', prevItemNameLeft ) ).text( thisLinkText ).css( 'display', 'inline' );
+				thisLink.attr( 'aria-label', menus.moveOutFrom.replace( '%s', prevItemNameLeft ) ).text( thisLinkText ).css( 'display', 'inline' );
 			}
 
 			if ( 0 !== position ) {
@@ -472,7 +472,7 @@
 				if ( menuItem.find( '.menu-item-data-parent-id' ).val() !== menuItem.prev().find( '.menu-item-data-db-id' ).val() ) {
 					thisLink = menuItem.find( '.menus-move-right' ),
 					thisLinkText = menus.under.replace( '%s', prevItemNameRight );
-					thisLink.prop( 'title', menus.moveUnder.replace( '%s', prevItemNameRight ) ).text( thisLinkText ).css( 'display', 'inline' );
+					thisLink.attr( 'aria-label', menus.moveUnder.replace( '%s', prevItemNameRight ) ).text( thisLinkText ).css( 'display', 'inline' );
 				}
 			}
 
@@ -494,7 +494,8 @@
 				title = menus.subMenuFocus.replace( '%1$s', itemName ).replace( '%2$d', itemPosition ).replace( '%3$s', parentItemName );
 			}
 
-			$this.prop('title', title).text( title );
+			// @todo Consider to update just the `aria-label` attribute.
+			$this.attr( 'aria-label', title ).text( title );
 
 			// Mark this item's accessibility as refreshed
 			$this.data( 'needs_accessibility_refresh', false );
@@ -833,36 +834,6 @@
 			});
 		},
 
-		/**
-		 * An interface for managing default values for input elements
-		 * that is both JS and accessibility-friendly.
-		 *
-		 * Input elements that add the class 'input-with-default-title'
-		 * will have their values set to the provided HTML title when empty.
-		 */
-		setupInputWithDefaultTitle : function() {
-			var name = 'input-with-default-title';
-
-			$('.' + name).each( function(){
-				var $t = $(this), title = $t.attr('title'), val = $t.val();
-				$t.data( name, title );
-
-				if( '' === val ) $t.val( title );
-				else if ( title == val ) return;
-				else $t.removeClass( name );
-			}).focus( function(){
-				var $t = $(this);
-				if( $t.val() == $t.data(name) )
-					$t.val('').removeClass( name );
-			}).blur( function(){
-				var $t = $(this);
-				if( '' === $t.val() )
-					$t.addClass( name ).val( $t.data(name) );
-			});
-
-			$( '.blank-slate .input-with-default-title' ).focus();
-		},
-
 		attachThemeLocationsListeners : function() {
 			var loc = $('#nav-menu-theme-locations'), params = {};
 			params.action = 'menu-locations-save';
@@ -882,7 +853,8 @@
 		attachQuickSearchListeners : function() {
 			var searchTimer;
 
-			$('.quick-search').keypress(function(e){
+			// Uniform events on all "self submitting" fields, see ticket #26600#comment:59
+			$( '.quick-search' ).on( 'input keyup', function( e ) {
 				var t = $(this);
 
 				if( 13 == e.which ) {
@@ -894,17 +866,27 @@
 
 				searchTimer = setTimeout(function(){
 					api.updateQuickSearchResults( t );
-				}, 400);
+				}, 500 );
+			}).on( 'blur', function() {
+				api.lastSearch = '';
 			}).attr('autocomplete','off');
 		},
 
 		updateQuickSearchResults : function(input) {
 			var panel, params,
-			minSearchLength = 2,
-			q = input.val();
+				minSearchLength = 2,
+				q = input.val();
 
-			if( q.length < minSearchLength ) return;
+			/*
+			 * Minimum characters for a search. Also avoid a new AJAX search when
+			 * the key pressed (e.g.arrows) doesn't change the searched term.
+			 */
+			if ( q.length < minSearchLength || api.lastSearch == q ) {
+				return;
+			}
 
+			api.lastSearch = q;
+
 			panel = input.parents('.tabs-panel');
 			params = {
 				'action': 'menu-quick-search',
Index: src/wp-admin/nav-menus.php
===================================================================
--- src/wp-admin/nav-menus.php	(revision 36220)
+++ src/wp-admin/nav-menus.php	(working copy)
@@ -736,17 +736,21 @@
 					wp_nonce_field( 'meta-box-order', 'meta-box-order-nonce', false );
 					wp_nonce_field( 'update-nav_menu', 'update-nav-menu-nonce' );
 
-					if ( $one_theme_location_no_menus ) { ?>
+					$menu_name_aria_desc = $add_new_screen ? ' aria-describedby="menu-name-desc"' : '';
+
+					if ( $one_theme_location_no_menus ) {
+						$menu_name_val = 'value="' . esc_attr( 'Menu 1' ) . '"';
+					?>
 						<input type="hidden" name="zero-menu-state" value="true" />
-					<?php } ?>
+					<?php } else {
+						$menu_name_val = 'value="' . esc_attr( $nav_menu_selected_title ) . '"';
+					} ?>
  					<input type="hidden" name="action" value="update" />
 					<input type="hidden" name="menu" id="menu" value="<?php echo esc_attr( $nav_menu_selected_id ); ?>" />
 					<div id="nav-menu-header">
 						<div class="major-publishing-actions">
-							<label class="menu-name-label howto open-label" for="menu-name">
-								<span><?php _e( 'Menu Name' ); ?></span>
-								<input name="menu-name" id="menu-name" type="text" class="menu-name regular-text menu-item-textbox input-with-default-title" title="<?php esc_attr_e( 'Enter menu name here' ); ?>" value="<?php if ( $one_theme_location_no_menus ) _e( 'Menu 1' ); else echo esc_attr( $nav_menu_selected_title ); ?>" />
-							</label>
+							<label class="menu-name-label" for="menu-name"><?php _e( 'Menu Name' ); ?></label>
+							<input name="menu-name" id="menu-name" type="text" class="menu-name regular-text menu-item-textbox" <?php echo $menu_name_val . $menu_name_aria_desc; ?> />
 							<div class="publishing-action">
 								<?php submit_button( empty( $nav_menu_selected_id ) ? __( 'Create Menu' ) : __( 'Save Menu' ), 'button-primary menu-save', 'save_menu', false, array( 'id' => 'save_menu_header' ) ); ?>
 							</div><!-- END .publishing-action -->
@@ -769,7 +773,7 @@
 							<?php } ?>
 							<?php endif; ?>
 							<?php if ( $add_new_screen ) : ?>
-								<p class="post-body-plain"><?php _e( 'Give your menu a name above, then click Create Menu.' ); ?></p>
+								<p class="post-body-plain" id="menu-name-desc"><?php _e( 'Give your menu a name, then click Create Menu.' ); ?></p>
 								<?php if ( isset( $_GET['use-location'] ) ) : ?>
 									<input type="hidden" name="use-location" value="<?php echo esc_attr( $_GET['use-location'] ); ?>" />
 								<?php endif; ?>
@@ -801,7 +805,7 @@
 											<input type="checkbox"<?php checked( isset( $menu_locations[ $location ] ) && $menu_locations[ $location ] == $nav_menu_selected_id ); ?> name="menu-locations[<?php echo esc_attr( $location ); ?>]" id="locations-<?php echo esc_attr( $location ); ?>" value="<?php echo esc_attr( $nav_menu_selected_id ); ?>" />
 											<label for="locations-<?php echo esc_attr( $location ); ?>"><?php echo $description; ?></label>
 											<?php if ( ! empty( $menu_locations[ $location ] ) && $menu_locations[ $location ] != $nav_menu_selected_id ) : ?>
-												<span class="theme-location-set"><?php 
+												<span class="theme-location-set"><?php
 													/* translators: %s: menu name */
 													printf( _x( '(Currently set to: %s)', 'menu location' ),
 														wp_get_nav_menu_object( $menu_locations[ $location ] )->name
Index: src/wp-includes/class-wp-customize-nav-menus.php
===================================================================
--- src/wp-includes/class-wp-customize-nav-menus.php	(revision 36220)
+++ src/wp-includes/class-wp-customize-nav-menus.php	(working copy)
@@ -743,19 +743,15 @@
 						<span class="toggle-indicator" aria-hidden="true"></span>
 					</button>
 				</h4>
-				<div class="accordion-section-content">
+				<div class="accordion-section-content customlinkdiv">
 					<input type="hidden" value="custom" id="custom-menu-item-type" name="menu-item[-1][menu-item-type]" />
 					<p id="menu-item-url-wrap">
-						<label class="howto" for="custom-menu-item-url">
-							<span><?php _e( 'URL' ); ?></span>
-							<input id="custom-menu-item-url" name="menu-item[-1][menu-item-url]" type="text" class="code menu-item-textbox" value="http://">
-						</label>
+						<label class="howto" for="custom-menu-item-url"><?php _e( 'URL' ); ?></label>
+						<input id="custom-menu-item-url" name="menu-item[-1][menu-item-url]" type="text" class="code menu-item-textbox" value="http://">
 					</p>
 					<p id="menu-item-name-wrap">
-						<label class="howto" for="custom-menu-item-name">
-							<span><?php _e( 'Link Text' ); ?></span>
-							<input id="custom-menu-item-name" name="menu-item[-1][menu-item-title]" type="text" class="regular-text menu-item-textbox">
-						</label>
+						<label class="howto" for="custom-menu-item-name"><?php _e( 'Link Text' ); ?></label>
+						<input id="custom-menu-item-name" name="menu-item[-1][menu-item-title]" type="text" class="regular-text menu-item-textbox">
 					</p>
 					<p class="button-controls">
 						<span class="add-to-menu">