https://wpml.org/errata/yoast-breadcrumb-does-not-translate-the-parent-page-slug-in-url/
Yoast breadcrumb does not translate the parent page slug in URL - WPML
Mar 17, 2021 - When using the yoast_breadcrumb() function to display breadcrumbs, some page links on translated languages may display the original slug instead of the
the parent pagedoes not