Count query with join o2m + limit + where throws an exception

class Poll extends Doctrine_Record
{
	public function setTableDefinition()
	{
		$this->setTableName('module_polls');
		
		$this->hasColumn('id_category', 'integer', null, array('notnull' => true));
		$this->hasColumn('question', 'string', 256);
	}
	
	public function setUp()
	{
		$this->hasMany('PollAnswer as Answers', array('local' => 'id', 'foreign' => 'id_poll', 'orderBy' => 'position'));
	}
}

class PollAnswer extends Doctrine_Record
{
	public function setTableDefinition()
	{
		$this->setTableName('module_polls_answers');
		
		$this->hasColumn('id_poll', 'integer', null, array('notnull' => true));
		$this->hasColumn('answer', 'string', 256);
		$this->hasColumn('votes', 'integer', null, array('notnull' => true, 'default' => 0));
		$this->hasColumn('position', 'integer');
	}
	
	public function setUp()
	{
		$this->hasOne('Poll', array('local' => 'id_poll', 'foreign' => 'id', 'onDelete' => 'CASCADE'));
	}
}

$query = Doctrine_Query::create()
	->from('Poll p')
	->leftJoin('p.Answers pa')
	->where('id_category = ?', 1)
	->limit(10);

print_r($query->count());

This fails with the following exception being thrown:

SQLSTATE[42000]: Syntax error or access violation: 1064 Something is wrong in your syntax obok '? LIMIT 10' w linii 1. Failing Query: "SELECT DISTINCT `m3`.`id` FROM `module_polls` `m3` LEFT JOIN `module_polls_answers` `m4` ON `m3`.`id` = `m4`.`id_poll` WHERE `m3`.`id_category` = ? LIMIT 10"
#0 (...)\library\Doctrine\Doctrine\Connection.php(1015): Doctrine_Connection->rethrowException(Object(PDOException), Object(Doctrine_Connection_Mysql), 'SELECT DISTINCT...')
#1 (...)\library\Doctrine\Doctrine\Query.php(1246): Doctrine_Connection->execute('SELECT DISTINCT...', Array)
#2 (...)\library\Doctrine\Doctrine\Query.php(1106): Doctrine_Query->buildSqlQuery()
#3 (...)\library\Doctrine\Doctrine\Query\Abstract.php(1126): Doctrine_Query->getSqlQuery(Array)
#4 (...)\library\Doctrine\Doctrine\Query\Abstract.php(1088): Doctrine_Query_Abstract->_getDqlCallbackComponents(Array)
#5 (...)\library\Doctrine\Doctrine\Query.php(1126): Doctrine_Query_Abstract->_preQuery()
#6 (...)\library\Doctrine\Doctrine\Query.php(1106): Doctrine_Query->buildSqlQuery()
#7 (...)\library\Doctrine\Doctrine\Query.php(1995): Doctrine_Query->getSqlQuery()
#8 (...)\library\Doctrine\Doctrine\Query.php(2091): Doctrine_Query->getCountSqlQuery()
#9 (...)\test2.php(123): Doctrine_Query->count()
#10

You can see the generated query which is wrong, moreover it is passed with an empty params array().
Without either where condition or limit removed, it works. With a combo of both of them it fails.

E.g. without where condition the following query is generated:
SELECT COUNT AS `num_results` FROM (SELECT `m`.`id` FROM `module_polls` `m` LEFT JOIN `module_polls_answers` `m2` ON `m`.`id` = `m2`.`id_poll` GROUP BY `m`.`id`) `dctrn_count_query`