TWB bundle inline layout in fieldset issue

Host.php

$this->add(array(
             'type' => 'Zend\Form\Element\Collection',
             'name' => 'hostmacros',
             'twb-layout' => \TwbBundle\Form\View\Helper\TwbBundleForm::LAYOUT_INLINE,

             'options' => array(
                 // 'label' => 'Please choose categories for this product',
                 // 'count' => 2,
                 'twb-layout' => \TwbBundle\Form\View\Helper\TwbBundleForm::LAYOUT_INLINE,
                 'should_create_template' => true,
                 'allow_add' => true,
                 'target_element' => array(
                     'type' => 'NocConfig\Form\HostMacros',
                 ),
             ),
         ));

HostMacros.php

<?php
namespace NocConfig\Form;

use Zend\Form\Fieldset;
use Zend\InputFilter\InputFilterProviderInterface;
use Zend\Stdlib\Hydrator\ClassMethods as ClassMethodsHydrator;

class HostMacros extends Fieldset implements InputFilterProviderInterface
{
    public function __construct()
    {
        parent::__construct('hostmacros');
        $this->setHydrator(new ClassMethodsHydrator(false));
                 
        $this->setOptions(array('twb-layout' => \TwbBundle\Form\View\Helper\TwbBundleForm::LAYOUT_INLINE));

        $this->add(array(
            'name' => 'macro',
            'attributes' => array(
              'placeholder' => "{\$MACRO}",
              'name' => 'macros',
            ),
            'options' => array(
                'label' => ''
            ),
        ));
        $this->add(array(
            'name' => 'value',
            'attributes' => array(
              'placeholder' => "value",
              'name' => 'value',
            ),
            'options' => array(
                'label' => ''
            ),
        ));

        


    }

   

    /**
     * Should return an array specification compatible with
     * {@link Zend\InputFilter\Factory::createInputFilter()}.
     *
     * @return array
     */
    public function getInputFilterSpecification()
    {
        return array(
            'macro' => array(
                'required' => false,
            ),
            'value' => array(
                'required' => false,
            ),

        );
    }
}

ouput

<fieldset><fieldset><div class="form-group "><input name="hostmacros[0][macros]" placeholder="{$MACRO}" class="form-control" type="text" value=""></div>
<div class="form-group "><input name="hostmacros[0][value]" placeholder="value" class="form-control" type="text" value=""></div>
</fieldset><span data-template="&lt;fieldset &gt;&lt;div class=&quot;form-group &quot;&gt;&lt;input name=&quot;hostmacros[__index__][macros]&quot; placeholder=&quot;{$MACRO}&quot; class=&quot;form-control&quot; type=&quot;text&quot; value=&quot;&quot;&gt;&lt;/div&gt;
&lt;div class=&quot;form-group &quot;&gt;&lt;input name=&quot;hostmacros[__index__][value]&quot; placeholder=&quot;value&quot; class=&quot;form-control&quot; type=&quot;text&quot; value=&quot;&quot;&gt;&lt;/div&gt;
&lt;/fieldset&gt;"></span></fieldset>

view.phtml

<? echo $this->formCollection($this->form->get('hostmacros'),true,'inline'); ?>