Why is the selected value not showing in Select2?

Question

Yii

Hello. I have the following code using kartik\select2:

$user_profiles = ArrayHelper::merge(['' => 'Выберите пользователя'],
    ArrayHelper::map(Profile::find()->orderBy('full_name')->asArray()->all(), 'user_id',
        'full_name'))

\kartik\widgets\Select2::widget([
                        'name' => 'state_10',
                        'data' => $user_profiles,
                        'size' => \kartik\select2\Select2::SIZE_LARGE,
                        'pluginEvents' => [
                            "change" => 'function() { 
                    var data_id = $(this).val();
                    document.getElementById(\'userId\').value = data_id
                 }',
                        ],
                        'pluginOptions' => [
                            'tags' => true
                        ]
                    ]

The problem is that after selecting a value from the list, the widget's placeholder resets to 'Select a user' instead of displaying the selected list item. I get the correct value, the problem is only with its display. What could be the problem?