Problem: The client was experiencing an issue with the display of posts of a custom post type (CPT) named 'Kolekcje' across different languages in the archive. Despite setting the CPT to 'translatable' as per the documentation, the posts were not displaying correctly. Solution: We reviewed the client's website and found that the issue seemed to be resolved, with all English Collections having the 'published' status and no duplicates in the archive pages. We asked the client if they had used the
'suppress_filters' => false
function in their code, as it could be related to the issue. We requested the current status of the project to provide further assistance. If this solution doesn't look relevant to your situation, please open a new support ticket with us.