sidebar categories not applying filter after click
on the single post pages, we have categories in the right-sidebar. beside each category in the list, the number of posts is correct:
When clicking any category, then we are going to the blog result page. But it's showing ALL posts, not only the one of the category clicked. In this example, we have only 1 post in "services" category, visible also in the posts in WP editor:
but the click will display all posts:
The native plugin doesn't have specific settings:
Any idea how to fix the filtering when clicking the categories?