Ticket #55176: #55176.2.patch

src/wp-includes/post.php

@@ -2912 +2912 @@
         $updated  = false;
 
         if ( ! is_array( $stickies ) ) {
-                $stickies = array( $post_id );
+                $stickies = array();
         } else {
                 $stickies = array_unique( array_map( 'intval', $stickies ) );
         }