Ticket #25408: 25408-missing-array-indexes.diff

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

@@ -850 +850 @@
          * @return array
          */
         protected function get_column_info() {
-                if ( isset( $this->_column_headers ) )
+                if ( isset( $this->_column_headers ) ) {
+                        while ( sizeof( $this->_column_headers ) < 4 ) {
+                                if ( 3 === sizeof( $this->_column_headers ) ) {
+                                        $this->_column_headers[] = $this->get_primary_column_name();
+                                } else {
+                                        $this->_column_headers[] = array();
+                                }
+                        }
                         return $this->_column_headers;
+                }
 
                 $columns = get_column_headers( $this->screen );
                 $hidden = get_hidden_columns( $this->screen );