Ticket #25408: 25408.20.diff

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

@@ -850 +850 @@
          * @return array
          */
         protected function get_column_info() {
-                if ( isset( $this->_column_headers ) && is_array( $this->_column_headers ) && count( $this->_column_headers ) >= 4 ) {
-                        return $this->_column_headers;
+                if ( isset( $this->_column_headers ) && is_array( $this->_column_headers ) ) {
+                        return array_replace( array( array(), array(), array(), null ), $this->_column_headers );
                 }
 
                 $columns = get_column_headers( $this->screen );