While performing search on the portal, results comes up with links due to the Typeahead functionality. When user clicks on one of the result in the Typeahead search results, system redirects user to instance backend instead of redirecting to the search result record in portal.
Below screenshot explains this issue symptoms in a better way.
Any supported release.
In the search source, "Page" is not mentioned on the "Typeahead" section, hence the link is not rendered correctly on the DOM.
Configure the relevant page in the "Typeahead" section of search source as shown in below screenshot, this should resolve the issue.