TI18nFormField::value() hat keinen Effekt

    /**
     * @inheritDoc
     */
    protected function createForm() {
        parent::createForm();
        
        $this->form->appendChildren([
            FormContainer::create('foo')
                ->appendChildren([
                    TitleFormField::create()
                        ->label('foo')
                        ->maximumLength(255)
                        ->i18n()
                        ->languageItemPattern('foo.bar.baz\d+')
                        ->required(),
                ]),
        ]);
        
        /** @var TitleFormField|TI18nFormField $titleField */
        $titleField = $this->form->getNodeById('title');
        $titleField->value('bar');
    }

#0 /lib/system/form/builder/field/TI18nFormField.class.php(315): wcf\system\language\I18nHandler->unregister()
#1 /lib/system/form/builder/FormDocument.class.php(231): wcf\system\form\builder\field\TextFormField->populate()
#2 /lib/form/AbstractFormBuilderForm.class.php(101): wcf\system\form\builder\FormDocument->build()
#3 /lib/acp/form/MyForm.class.php(281): wcf\form\AbstractFormBuilderForm->buildForm()
#4 /lib/form/AbstractFormBuilderForm.class.php(256): wcf\acp\form\MyForm->buildForm()
#5 /lib/page/AbstractPage.class.php(336): wcf\form\AbstractFormBuilderForm->checkPermissions()
#6 /lib/page/AbstractPage.class.php(122): wcf\page\AbstractPage->show()
#7 /lib/system/request/Request.class.php(89): wcf\page\AbstractPage->__run()
#8 /lib/system/request/RequestHandler.class.php(119): wcf\system\request\Request->execute()
#9 /acp/index.php(9): wcf\system\request\RequestHandler->handle()
#10 {main}