[Escalated to WPML Developers team] Modification of internal links in ACF WYSIWYG field

classes/Field/FrontendHooks.php

/**
 * Replace %recipe_category% by the taxonomies slug in the recipe post type permalink.
 *
 * @source : https://stackoverflow.com/questions/66575072/wordpress-permalink-rewrite-for-custom-taxonomy-and-post-type-that-uses-parent-a
 *
 * @param string $post_link The post link.
 * @param object $post The post object.
 *
 * @return string The post link.
 */
function recipe_post_type_link( $post_link, $post ) {
	if ( ! is_a( $post, 'WP_Post' ) || 'recipe' !== get_post_type( $post ) ) {
		return $post_link;
	}

	$taxonomy = 'recipe_category';

	// Handle the Yoast SEO primary term.
	$primary_term = get_primary_category( $post->ID, $taxonomy );

	if ( $primary_term && ! is_wp_error( $primary_term ) ) {

		$ancestors = get_ancestors( $primary_term->term_id, $taxonomy, 'taxonomy' );
		$ancestors = array_reverse( $ancestors );
		$ancestors[] = $primary_term->term_id; // Add the primary term itself at the end

		$slug_hierarchy = [];

		foreach ( $ancestors as $term_id ) {
			$term = get_term( $term_id, $taxonomy );

			if ( $term && ! is_wp_error( $term ) ) {
				$slug_hierarchy[] = $term->slug;
			}
		}

		if ( ! empty( $slug_hierarchy ) ) {
			$post_link = str_replace( '%' . $taxonomy . '%', join( '/', $slug_hierarchy ), $post_link );
		}
	} else {
		$post_link = str_replace( '%' . $taxonomy . '%/', '', $post_link );
	}

	return $post_link;
}
add_filter( 'post_type_link', __NAMESPACE__ . 'recipe_post_type_link', 10, 2 );

wpml_translate_link_targets