SonataAdminBundle: sonata_collection unable to add row via modal way

Environment

Windows 10 - Chrome 54

Sonata packages

sonata-project/admin-bundle 3.10.0
sonata-project/block-bundle 3.2.0
sonata-project/cache 1.0.7 sonata-project/core-bundle 3.1.1
sonata-project/datagrid-bundle 2.2
sonata-project/doctrine-extensions 1.0.2
sonata-project/doctrine-orm-admin-bundle 3.1.1 sonata-project/easy-extends-bundle 2.1.10 sonata-project/exporter 1.7.0 sonata-project/google-authenticator 1.0.2 sonata-project/user-bundle 3.2.0

Symfony packages

symfony/monolog-bundle 2.12.0 symfony/phpunit-bridge v2.8.14 symfony/polyfill-apcu v1.3 symfony/polyfill-intl-icu v1.3.0 symfony/polyfill-mbstring v1.3.0
symfony/polyfill-php54 v1.3.0 symfony/polyfill-php55 v1.3.0 symfony/polyfill-php56 v1.3.0 symfony/polyfill-php70 v1.3.0 symfony/polyfill-util v1.3.0 symfony/security-acl v2.8.0 symfony/swiftmailer-bundle v2.4.0 symfony/symfony v2.8.14

PHP version

PHP 5.5.12

Subject

In my admin I have a OneToMany defined as it:

/**
 * @ORM\OneToMany(targetEntity="Module", mappedBy="sequence", cascade={"persist", "remove"})
 */
 private $modules;

And the inversed side:

/**
 * @ORM\ManyToOne(targetEntity="ModuleSequence", inversedBy="modules", cascade={"persist"}, fetch="LAZY")
 * @ORM\JoinColumn(name="sequence_id", referencedColumnName="id")
 */
protected $sequence;

In my admin class I defined the ‘modules’ field as it:

->add('modules', 'sonata_type_collection',array(
       'by_reference' => false
 ))

Finally in the ModuleSequence Entity here’s the addModule method:

     /**
     * Add modules
     *
     * @param \AppBundle\Entity\Module $module
     * @return ModuleSequence
     */

    public function addModule(\AppBundle\Entity\Module $module)
    {
        $module->setSequence($this);
        $this->modules[] = $module;

        return $this;
    }

I have the “add” button, I get the modal, I fill it and validate. The Ajax request is sent into the profiler but no new row appear.

The ‘sequence_id’ is not set in the database and I don’t know why…

When I use the ‘inline’ & ‘table’ options, the id is well set.

I think there is a bug here.