Index: wp-admin/edit-tag-form.php
===================================================================
--- wp-admin/edit-tag-form.php	(revision 39474)
+++ wp-admin/edit-tag-form.php	(working copy)
@@ -72,7 +72,7 @@
 
 <?php if ( $message ) : ?>
 <div id="message" class="updated">
-	<p><strong><?php echo $message; ?></strong></p>
+	<p><?php echo $message; ?></p>
 	<?php if ( $wp_http_referer ) { ?>
 	<p><a href="<?php echo esc_url( $wp_http_referer ); ?>"><?php
 		/* translators: %s: taxonomy name */
Index: wp-admin/includes/nav-menu.php
===================================================================
--- wp-admin/includes/nav-menu.php	(revision 39474)
+++ wp-admin/includes/nav-menu.php	(working copy)
@@ -1082,7 +1082,7 @@
 	$messages[] = '<div id="message" class="updated notice is-dismissible"><p>' .
 		/* translators: %s: nav menu title */
 		sprintf( __( '%s has been updated.' ),
-			'<strong>' . $nav_menu_selected_title . '</strong>'
+			$nav_menu_selected_title
 		) . '</p></div>';
 
 	unset( $menu_items, $unsorted_menu_items );
Index: wp-admin/includes/template.php
===================================================================
--- wp-admin/includes/template.php	(revision 39474)
+++ wp-admin/includes/template.php	(working copy)
@@ -1480,7 +1480,7 @@
 		$css_id = 'setting-error-' . $details['code'];
 		$css_class = $details['type'] . ' settings-error notice is-dismissible';
 		$output .= "<div id='$css_id' class='$css_class'> \n";
-		$output .= "<p><strong>{$details['message']}</strong></p>";
+		$output .= "<p>{$details['message']}</p>";
 		$output .= "</div> \n";
 	}
 	echo $output;
Index: wp-admin/js/edit-comments.js
===================================================================
--- wp-admin/js/edit-comments.js	(revision 39474)
+++ wp-admin/js/edit-comments.js	(working copy)
@@ -280,7 +280,7 @@
 
 			el.before(h);
 
-			$('strong', '#undo-' + id).text(author);
+			$('strong', '#undo-' + id).replaceWith(author);
 			a = $('.undo a', '#undo-' + id);
 			a.attr('href', 'comment.php?action=un' + action + 'comment&c=' + id + '&_wpnonce=' + settings.data._ajax_nonce);
 			a.attr('data-wp-lists', 'delete:the-comment-list:comment-' + id + '::un' + action + '=1');
Index: wp-admin/my-sites.php
===================================================================
--- wp-admin/my-sites.php	(revision 39474)
+++ wp-admin/my-sites.php	(working copy)
@@ -51,7 +51,7 @@
 require_once( ABSPATH . 'wp-admin/admin-header.php' );
 
 if ( $updated ) { ?>
-	<div id="message" class="updated notice is-dismissible"><p><strong><?php _e( 'Settings saved.' ); ?></strong></p></div>
+	<div id="message" class="updated notice is-dismissible"><p><?php _e( 'Settings saved.' ); ?></p></div>
 <?php } ?>
 
 <div class="wrap">
Index: wp-admin/plugins.php
===================================================================
--- wp-admin/plugins.php	(revision 39474)
+++ wp-admin/plugins.php	(working copy)
@@ -479,13 +479,13 @@
 		</div>
 		<?php endif; ?>
 <?php elseif ( isset($_GET['activate']) ) : ?>
-	<div id="message" class="updated notice is-dismissible"><p><?php _e('Plugin <strong>activated</strong>.') ?></p></div>
+	<div id="message" class="updated notice is-dismissible"><p><?php _e('Plugin activated.') ?></p></div>
 <?php elseif (isset($_GET['activate-multi'])) : ?>
-	<div id="message" class="updated notice is-dismissible"><p><?php _e('Selected plugins <strong>activated</strong>.'); ?></p></div>
+	<div id="message" class="updated notice is-dismissible"><p><?php _e('Selected plugins activated.'); ?></p></div>
 <?php elseif ( isset($_GET['deactivate']) ) : ?>
-	<div id="message" class="updated notice is-dismissible"><p><?php _e('Plugin <strong>deactivated</strong>.') ?></p></div>
+	<div id="message" class="updated notice is-dismissible"><p><?php _e('Plugin deactivated.') ?></p></div>
 <?php elseif (isset($_GET['deactivate-multi'])) : ?>
-	<div id="message" class="updated notice is-dismissible"><p><?php _e('Selected plugins <strong>deactivated</strong>.'); ?></p></div>
+	<div id="message" class="updated notice is-dismissible"><p><?php _e('Selected plugins deactivated.'); ?></p></div>
 <?php elseif ( 'update-selected' == $action ) : ?>
 	<div id="message" class="updated notice is-dismissible"><p><?php _e('All selected plugins are up to date.'); ?></p></div>
 <?php endif; ?>
Index: wp-admin/user-edit.php
===================================================================
--- wp-admin/user-edit.php	(revision 39474)
+++ wp-admin/user-edit.php	(working copy)
@@ -177,9 +177,9 @@
 <?php if ( isset($_GET['updated']) ) : ?>
 <div id="message" class="updated notice is-dismissible">
 	<?php if ( IS_PROFILE_PAGE ) : ?>
-	<p><strong><?php _e('Profile updated.') ?></strong></p>
+	<p><?php _e('Profile updated.') ?></p>
 	<?php else: ?>
-	<p><strong><?php _e('User updated.') ?></strong></p>
+	<p><?php _e('User updated.') ?></p>
 	<?php endif; ?>
 	<?php if ( $wp_http_referer && false === strpos( $wp_http_referer, 'user-new.php' ) && ! IS_PROFILE_PAGE ) : ?>
 	<p><a href="<?php echo esc_url( $wp_http_referer ); ?>"><?php _e('&larr; Back to Users'); ?></a></p>