orm: Matching criteria on the InverseSide of a ManyToMany relation fails

I’m using DBAL and ORM 2.5.4, with PHP 5.5.15.

I have two classes (Asset and Process) which are linked by a ManyToMany relation as follows:

class Asset extends Base {
    /**
     * @Doctrine\ORM\Mapping\Id
     * @Doctrine\ORM\Mapping\Column(type="integer", options={"unsigned"=true})
     * @Doctrine\ORM\Mapping\GeneratedValue
     **/
    protected $id;

    /**
     * @Doctrine\ORM\Mapping\ManyToMany(targetEntity="Process", mappedBy="assets")
     **/
    protected $processes;
}

class Process extends Base {
    /**
     * @Doctrine\ORM\Mapping\Id
     * @Doctrine\ORM\Mapping\Column(type="integer", options={"unsigned"=true})
     * @Doctrine\ORM\Mapping\GeneratedValue
     **/
    protected $id;

    /**
     * @Doctrine\ORM\Mapping\ManyToMany(targetEntity="Asset", inversedBy="processes")
     * @Doctrine\ORM\Mapping\OrderBy({"id" = "ASC"})
     **/
    protected $assets;

    /**
     * @Doctrine\ORM\Mapping\Column(type="string")
     **/
    protected $status;

Now I’m trying to filter Active’s Processes by a field (status) as follows:

$expr = \Doctrine\Common\Collections\Criteria::expr();
$criteria = \Doctrine\Common\Collections\Criteria::create()
    ->where($expr->eq("status", 'finished'));

$this->getProcesses()->matching($criteria);

If I understand correctly, this should work, but instead I’m getting a bunch of exceptions:

Notice: Undefined index: relationToSourceKeyColumns in vendor\doctrine\orm\lib\Doctrine\ORM\Persisters\Collection\ManyToManyPersister.php on line 234

And

Notice: Undefined index: name in vendor\doctrine\orm\lib\Doctrine\ORM\Mapping\DefaultQuoteStrategy.php on line105

I’ve walked through the code and the problem seems to be that on ManyToManyPersister::loadCriteria() $joinTable is not loading correctly (it’s returning an empty string):

$joinTable    = $this->quoteStrategy->getJoinTableName($mapping, $ownerMetadata, $this->platform);

Which creates this SQL query:

SELECT te.id AS id, te.status AS status FROM processes te JOIN  t ON t.process_id = te.id WHERE te.status = ?' with params ["finished"]

Note how the JOIN table is missing from the query (JOIN t).

Setting JoinTable excplicitly on the Owning side (Process) does not make any difference, but setting it on the Inverse side (Asset) makes the SQL query be built correctly, but those 2 errors still happen:

Notice: Undefined index: relationToSourceKeyColumns in vendor\doctrine\orm\lib\Doctrine\ORM\Persisters\Collection\ManyToManyPersister.php on line 234

And

Notice: Undefined index: name in vendor\doctrine\orm\lib\Doctrine\ORM\Mapping\DefaultQuoteStrategy.php on line105

Now, if I understand correctly, setting the JoinTable should not be necessary, and everything should work with no errors… Is this a bug, or did I misunderstand something?