Oxygen - shortcode render

function.php

function lynt_save_oxygen( $meta_id, $object_id, $meta_key, $meta_value ) {
	if ( 'ct_builder_shortcodes' !== $meta_key ) return;
    $post = get_post( $object_id );
	if ( 'page' !== $post->post_type ) return;
	$content = "<!-- wp:html -->\n" . do_shortcode( $meta_value ) . "\n<!-- /wp:html -->";
	$postarr = [
		'ID' => $post->ID,
		'post_content' => $content
	];
	wp_update_post( $postarr );
}
add_action( 'updated_postmeta', 'lynt_save_oxygen', 10, 4 );