Date picker: Cannot edit start time if enable period (from-to)

Assume that I am adding a Controls_Manager::DATE_TIME with the following:

$repeater->add_control(
    'period', array(
        'type' => Controls_Manager::DATE_TIME,
            'label' => __( 'Time Period', 'my_theme' ),
            'description' => __( 'Time period', 'my_theme' ),
            'picker_options' => array(
                'enableTime' => true,
                'mode' => 'range',
                'dateFormat' => 'Y-m-d H:i'
            ),
            'default' => '',
        )
    );

I found myself not able to edit the “From” time if using the above settings. Here is how to reproduce:

– Click on the time period input box, a popup appear
– Click on any date (e.g. Sept 1) as start date and click another date (e.g. Sept 10) as end date.
– Change the time, you will find that you can only change the end time, there is no way to change the start time.

Can you please take a look?

Thank you