diff --git a/src/wp-admin/css/wp-admin.css b/src/wp-admin/css/wp-admin.css
index 9069110906..23fd7e0e1c 100644
--- a/src/wp-admin/css/wp-admin.css
+++ b/src/wp-admin/css/wp-admin.css
@@ -11828,19 +11828,13 @@ li#wp-admin-bar-menu-toggle {
 	.auto-fold #adminmenuback,
 	.auto-fold #adminmenuwrap {
 		position: absolute;
-		left: 0;
+		width: 190px;
 		z-index: 100;
 	}
 
 	.auto-fold #adminmenuback,
 	.auto-fold #adminmenuwrap {
-		left: -200px;
-	}
-
-	.auto-fold #adminmenuwrap,
-	.auto-fold #adminmenu,
-	.auto-fold #adminmenuback {
-		width: 190px;
+		display: none;
 	}
 
 	.auto-fold #adminmenu li.menu-top {
@@ -11946,7 +11940,7 @@ li#wp-admin-bar-menu-toggle {
 
 	.auto-fold .wp-responsive-open #adminmenuback,
 	.auto-fold .wp-responsive-open #adminmenuwrap {
-		left: 0;
+		display: block;
 	}
 
 	/* General New Post Form */
diff --git a/src/wp-admin/js/common.js b/src/wp-admin/js/common.js
index 5da63320d6..53891d4017 100644
--- a/src/wp-admin/js/common.js
+++ b/src/wp-admin/js/common.js
@@ -560,10 +560,18 @@ $(document).ready( function() {
 				self.deactivate();
 			});
 
+			$( '#wp-admin-bar-menu-toggle a' ).attr( 'aria-expanded', 'false' );
+
 			// Toggle sidebar when toggle is clicked
 			$( '#wp-admin-bar-menu-toggle' ).on( 'click.wp-responsive', function( event ) {
 				event.preventDefault();
 				$wpwrap.toggleClass( 'wp-responsive-open' );
+				if ( $wpwrap.hasClass( 'wp-responsive-open' ) ) {
+					$(this).find('a').attr( 'aria-expanded', 'true' );
+					$( '#adminmenu a:first' ).focus();
+				} else {
+					$(this).find('a').attr( 'aria-expanded', 'false' );
+				}
 			} );
 
 			// Add menu events
diff --git a/src/wp-includes/admin-bar.php b/src/wp-includes/admin-bar.php
index 69334a6eb4..67e6a1a5a7 100644
--- a/src/wp-includes/admin-bar.php
+++ b/src/wp-includes/admin-bar.php
@@ -166,11 +166,8 @@ function wp_admin_bar_sidebar_toggle( $wp_admin_bar ) {
 	if ( is_admin() ) {
 		$wp_admin_bar->add_menu( array(
 			'id'    => 'menu-toggle',
-			'title' => '<span class="ab-icon"></span>',
+			'title' => '<span class="ab-icon"></span><span class="screen-reader-text">' . __( 'Menu' ) . '</span>',
 			'href'  => '#',
-			'meta'  => array(
-				'title' => __( 'Menu' ),
-			),
 		) );
 	}
 }