Hi Iris,
This can only happen if the navigation is returned as part of the article content (even if it’s not stored with it). I assume there is a programmatical hook that preprends the navigation bafore the actual article content and when Ajax Search Pro requests it, then it’s returned. Or it’s also possible that it’s appended to the auto-generated excerpts.
First I would try this configuration to see if that changes anything: https://i.imgur.com/bvllhIB.png
If it was the auto-generated excerpts, then this will solve it.
However if the hook is adding to the post content, then the only possible solution is to remove the hook and rather edit the theme template files directly to not make it the part of the content. As you can see the same thing appears on the search results page here: https://i.imgur.com/C4aE4d0.png
..and the results page layout is not controlled by Ajax Search Pro at all. My guess is that the breadcrumbs is somehow hooked into the excerpt or content generation.
