Appointments with custom statuses don't show on the calendar view

[Valentina R]

Reported here using this code:

// Add appointments statuses for user.
add_filter('woocommerce_appointment_statuses_for_user', function($stats){
    $stats['custom-status-1'] = 'Custom status 1';
    $stats['custom-status-2'] = 'Custom status 2';

    return $stats;
});

// Register appointments statuses.
add_action( 'init', 'register_custom_appointment_statuses' );
function register_custom_appointment_statuses() {
    register_post_status(
        'custom-status-1',
        array(
            'label'                     => '<span class="status-custom-status-1 tips">Custom status 1</span>',
            'public'                    => true,
            'exclude_from_search'       => false,
            'show_in_admin_all_list'    => true,
            'show_in_admin_status_list' => true,
            'label_count'               => _n_noop( 'Custom status 1 <span class="count">(%s)</span>', 'Custom status 1 <span class="count">(%s)</span>' ),
        )
    );
    register_post_status(
        'custom-status-2',
        array(
            'label'                     => '<span class="status-custom-status-2 tips">Custom status 1</span>',
            'public'                    => true,
            'exclude_from_search'       => false,
            'show_in_admin_all_list'    => true,
            'show_in_admin_status_list' => true,
            'label_count'               => _n_noop( 'Custom status 2 <span class="count">(%s)</span>', 'Custom status 2 <span class="count">(%s)</span>' ),
        )
    );
}

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