No input with nested MultipleInput after remove

[bscheshirwork]

For nested MultipleInput I not have a any data in $_POST for this field in case delete all rows. For 1st level I can see empty string (also is not good, but it exist).

I expect same behavior for 1st and 2st level of MultipleInput

[unclead]

Post an example of the code, please.

[bscheshirwork]

    <?= $form->field($model, 'nestedObjects')->widget(MultipleInput::class, [
        'rendererClass' => \unclead\multipleinput\renderers\ListRenderer::class,
        'max' => 6,
        'min' => 1,
        'allowEmptyList' => false,
        'enableGuessTitle' => true,
        'addButtonPosition' => MultipleInput::POS_HEADER, // show add button in the header
        'enableError' => true,
        'columns' => [
            [
                'name' => 'nested1', // attribute
                'title' => Yii::t('object', 'Nested1'),
                'type' => MultipleInput::class,
                'options' => [
                    'max' => 12,
                    'min' => 0,
                    'allowEmptyList' => true,
                    'enableGuessTitle' => true,
                    'addButtonPosition' => MultipleInput::POS_HEADER, // show add button in the header
                    'enableError' => true,
                    'columns' => [
                        [
                            'name' => 'nested2', // attribute
                            'title' => Yii::t('object', 'nested2'),
                        ],
                    ],
                ],
            ],
        ],
    ])
        ->label(false);
    ?>

[bax234]

    <?= $form->field($model, 'nestedObjects')->widget(MultipleInput::class, [
        'rendererClass' => \unclead\multipleinput\renderers\ListRenderer::class,
        'max' => 6,
        'min' => 1,
        'allowEmptyList' => false,
        'enableGuessTitle' => true,
        'addButtonPosition' => MultipleInput::POS_HEADER, // show add button in the header
        'enableError' => true,
        'columns' => [
            [
                'name' => 'nested1', // attribute
                'title' => Yii::t('object', 'Nested1'),
                'type' => MultipleInput::class,
                'options' => [
                    'max' => 12,
                    'min' => 0,
                    'allowEmptyList' => true,
                    'enableGuessTitle' => true,
                    'addButtonPosition' => MultipleInput::POS_HEADER, // show add button in the header
                    'enableError' => true,
                    'columns' => [
                        [
                            'name' => 'nested2', // attribute
                            'title' => Yii::t('object', 'nested2'),
                        ],
                    ],
                ],
            ],
        ],
    ])
        ->label(false);
    ?>

I was trying this example and combine with Tabular widget. In my case it's works, but need little bit event afterInit and afterAddRow to make custom generate element multidimesional array on second level.