The UID field is always localized. This does not always make sense. A unique ID might need to point to a unique resource where the localization is irrelevant.

For example, you might use the UID field to create a slug for a page. Some websites localize their URLs (e.g. /about and /over) but another common pattern is to prefix the path and use the same slug (i.e. /about and /nl/about).

Another issue arises when the localized fields are the same (e.g. /book-reviews/harry-potter) where you would get /book-reviews/harry-potter and /book-reviews/harry-potter-1.

Please consider making the UID field localization setting customizable.

See: https://github.com/strapi/strapi/issues/15248