Ticket #15386: ticket.15386.get_columns.diff

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

@@ -539 +539 @@
                 if ( !isset( $this->_column_headers ) ) {
                         $screen = get_current_screen();
 
-                        $columns = get_column_headers( $screen );
+                        $columns = apply_filters( 'manage_' . $screen->id . '_columns', $this->get_columns() );
                         $hidden = get_hidden_columns( $screen );
                         $sortable = apply_filters( "manage_{$screen->id}_sortable_columns", $this->get_sortable_columns() );