Background of the issue:
I am trying to translate the slug for a custom post type in a WordPress plugin using WPML. The custom post type slug is defined as 'producten'. I accessed WPML -> Setting and checked the Post Type Translations, where the post type is set as translatable.
Symptoms:
When I open the 'translate slugs' dropdown, it incorrectly shows 'seal-it' for every option, even though this text is not used in the plugin. The correct text should be 'sealit', which is the domain defined for the theme.
Questions:
Why is the slug translation showing 'seal-it' instead of 'producten'?
How can I correctly translate the custom post type slug in WPML?