Well, the good news is that the ajax search is working.
Are you using any kind of content builder plugin, or theme builder plugin or antyhing similar?
Have you changed the title and the content fields to something else on the advanced options panel?
If you turn on the debug mode in the wp-config.php file it should show some error messages. That “0” before the three dots tells me that something returned with a false value due to an error.
What's more interesting, that the title is completely missing. Unless you are using different title and content fields, this should definitely show the post title – because it's retrieved with the post ID with a wordpress core function, which works, unless the post ID is incorrect.
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