Dropdown timepicker is under next widget TouchSpin

[mklemarczyk]

Dropdown TimePicker selector is covered by TouchSpin widget.
Do you know why?

I attached source code below.

Notice that, all my CSS code is yii default CSS style.

Versions:
yii2-widgets: v3.4.0
yii2-field-range: v1.2.0

<?= FieldRange::widget([
            'form' => $form,
            'model' => $model,
            'label' => 'Time',
            'attribute1' => '['.$form->id.']time_from',
            'attribute2' => '['.$form->id.']time_to',
            'type' => FieldRange::INPUT_WIDGET,
            'widgetClass' => TimePicker::className(),
            'useAddons' => false,
            'options1' => [
                'class' => 'form-control',
                'placeholder' => 'Start time'
            ],
            'options2' => [
                'class' => 'form-control',
                'placeholder' => 'End time'
            ],
            'widgetOptions1' => [
                'pluginOptions' => [
                    'defaultTime' => '10:00',
                    'minuteStep' => 5,
                    'showInputs' => false,
                    'showMeridian' => false,
                    'template' => 'dropdown',
                ]
            ],
            'widgetOptions2' => [
                'pluginOptions' => [
                    'defaultTime' => '16:00',
                    'minuteStep' => 5,
                    'showInputs' => false,
                    'showMeridian' => false,
                    'template' => 'dropdown',
                ]
            ]
        ]); ?>
        <?= $form->field($model, '['.$form->id.']time_interval')->widget(TouchSpin::className(),[
            'options' => [
                'class' => 'form-control',
                'orientation' => 'vertical',
            ],
            'pluginOptions' => [
                'initval' => 15,
                'min' => 5,
                'max' => 120,
                'step' => 5,
                'boostat' => 5,
                'maxboostedstep' => 10,
                'postfix' => 'min',
                'verticalbuttons' => true,
                'verticalupclass' => 'glyphicon glyphicon-plus',
                'verticaldownclass' => 'glyphicon glyphicon-minus',
            ]]) ?>

[kartik-v]

The source bootstrap-touchspin plugin styling uses a bootstrap input group which forces overlay over others.

An updated enhancement has been done to override plugin CSS.

Resoved via this fix - upgrade of widget to v1.1.0.