BUG isChanged is not comparing to the databasefields

isChangedNotComparingWithStoredValue.php

<?php
/**
 */
class TempTask extends BuildTask {

	protected $title = 'TempTask';

	protected $description = '';

	public function run($request) {
		# correct behaviour: title hasn't changed as it is set to the original value
		$MyDataObject = Page::get_by_link('/');
		
		$title = $MyDataObject->Title;
		$MyDataObject->Title = $title;
		Debug::show($MyDataObject->getChangedFields(false, 2));
		
		# BUG isChanged is not comparing to the databasefields but to the last value of the property
		# expected behaviour: not changed. actual behaviour: changed
		$title = $MyDataObject->Title;
		$MyDataObject->Title = null;
		$MyDataObject->Title = $title;
		Debug::show($MyDataObject->getChangedFields(false, 2)); 
	
	}

}