Ticket #51038: 51038.diff

src/wp-includes/class-wp-image-editor-gd.php

@@ -307 +307 @@
          * @return bool|WP_Error
          */
         public function crop( $src_x, $src_y, $src_w, $src_h, $dst_w = null, $dst_h = null, $src_abs = false ) {
+                // If source height isn't specified,
+                // use height of the source file.
+                if( ! $src_h ) {
+                        $size = getimagesize( $this->file );
+                        $src_h = $size[1];
+                }
+
                 // If destination width/height isn't specified,
                 // use same as width/height from source.
                 if ( ! $dst_w ) {