Resolved in: WPML SEO 2.0
Overview of the issue
Rank Math SEO users have reported that the Shop breadcrumb is missing on their WooCommerce pages with WPML enabled. This happens only in secondary languages where the slug for Shop has been translated.
For example, if your default language is English and you have translated Shop to Tienda, you may find these breadcrumbs on your product pages:
English URL: https://www.examplesite.com/shop/my-product
English breadcrumbs: Home > Shop > My Product
Spanish URL: https://www.examplesite.com/tienda/mi-producto
Spanish breadcrumbs: Home > Mi Producto
For full compatibility with Rank Math including a solution to this issue, make sure to install and activate the WPML SEO glue plugin.