order notes in order preview (shows all notes, date bug)

// Add custom order data (order notes) to make it accessible in Order preview template.
add_filter( 'woocommerce_admin_order_preview_get_order_details', 'admin_order_preview_add_order_notes', 10, 2 );
function admin_order_preview_add_order_notes( $data, $order ) {
	// $notes = $order->get_customer_order_notes();

	$args = array(
		'order_id' => $order->get_id(),
		'orderby' => 'date_created',
		'type' => '', // use 'internal' for admin and system notes, empty for all
    );

	$notes = wc_get_order_notes( $args );

	ob_start();

	if ( $notes ) {
		foreach( $notes as $note ) {
			$note_classes = get_comment_meta( $note->comment_ID, 'is_customer_note', true ) ? array( 'customer-note', 'note' ) : array( 'note' );

			?>
			<li rel="<?php echo absint( $note->comment_ID ) ; ?>" class="<?php echo implode( ' ', $note_classes ); ?>">
				<div class="note_content">
					(<?php printf( __( 'added %s ago', 'woocommerce' ), human_time_diff( strtotime( $note->comment_date_gmt ), current_time( 'timestamp', 1 ) ) ); ?>)
					 <?php echo wpautop( wptexturize( wp_kses_post( $note->content ) ) ); ?>
				</div>
			</li>
			<?php
		}
	} else {
		echo '<li>' . __( 'There are no notes for this order yet.', 'woocommerce' ) . '</li>';
	}

	$data['order_notes'] = ob_get_clean();

	return $data;
}

// Display custom values in Order preview.
add_action( 'woocommerce_admin_order_preview_end', 'custom_display_order_notes_in_admin' );
function custom_display_order_notes_in_admin() {
	printf( '
		<div style="padding: 1em 1.5em;">
			<h2>%s</h2>
			<ul class="order_notes">
				{{{data.order_notes}}}
			</ul>
		</div>',
		__( 'Order Notes', 'woocommerce' )
	);
}