Ticket #34508: 34508.patch

src/wp-admin/includes/class-wp-list-table.php

@@ -937 +937 @@
          * @return string The name of the primary column.
          */
         protected function get_primary_column_name() {
-                $columns = $this->get_columns();
+                $columns = get_column_headers( $this->screen );
                 $default = $this->get_default_primary_column_name();
 
                 // If the primary column doesn't exist fall back to the