Ticket #43138: 43138.patch

wp-includes/post.php

@@ -5210 +5210 @@
         // Remove intermediate and backup images if there are any.
         if ( isset( $meta['sizes'] ) && is_array( $meta['sizes'] ) ) {
                 foreach ( $meta['sizes'] as $size => $sizeinfo ) {
-                        $intermediate_file = str_replace( basename( $file ), $sizeinfo['file'], $file );
+                        $intermediate_file = str_replace( wp_basename( $file ), $sizeinfo['file'], $file );
                         /** This filter is documented in wp-includes/functions.php */
                         $intermediate_file = apply_filters( 'wp_delete_file', $intermediate_file );
                         @ unlink( path_join( $uploadpath['basedir'], $intermediate_file ) );