Index: src/wp-includes/post-functions.php
===================================================================
--- src/wp-includes/post-functions.php	(revision 35362)
+++ src/wp-includes/post-functions.php	(working copy)
@@ -1942,7 +1942,11 @@
 			else
 				$value = format_to_edit($value);
 		} else {
-			$value = esc_attr($value);
+			if ( is_array( $value ) ) {
+				$value = array_map( 'esc_attr', $value );
+			} else {
+				$value = esc_attr( $value );
+			}
 		}
 	} elseif ( 'db' == $context ) {
 		if ( $prefixed ) {