diff --git a/src/wp-admin/widgets-form-blocks.php b/src/wp-admin/widgets-form-blocks.php
index b4c6dd28d4..4dc1c7c99c 100644
--- a/src/wp-admin/widgets-form-blocks.php
+++ b/src/wp-admin/widgets-form-blocks.php
@@ -73,7 +73,13 @@ require_once ABSPATH . 'wp-admin/admin-header.php';
 do_action( 'widgets_admin_page' );
 ?>
 
-<div id="widgets-editor" class="blocks-widgets-container"></div>
+<div id="widgets-editor" class="blocks-widgets-container">
+	<h1 class="wp-heading-inline"><?php echo esc_html( $title ); ?></h1>
+	<hr class="wp-header-end">
+	<div class="error hide-if-js">
+		<p><?php _e( 'The Widget screen requires JavaScript.' ); ?></p>
+	</div>
+</div>
 
 <?php
 /** This action is documented in wp-admin/widgets-form.php */
diff --git a/src/wp-includes/feed.php b/src/wp-includes/feed.php
index 7b91cbb70b..716c311059 100644
--- a/src/wp-includes/feed.php
+++ b/src/wp-includes/feed.php
@@ -480,6 +480,10 @@ function rss_enclosure() {
 			foreach ( (array) $val as $enc ) {
 				$enclosure = explode( "\n", $enc );
 
+				if ( 3 !== count($enclosure) ) {
+                    continue;
+                }
+
 				// Only get the first element, e.g. 'audio/mpeg' from 'audio/mpeg mpga mp2 mp3'.
 				$t    = preg_split( '/[ \t]/', trim( $enclosure[2] ) );
 				$type = $t[0];