Reply To: show the post content that has the highlighted word match only

Hi,

The highlighter is only applied after the search process is completed. It is more likely that the content is either filtered or changed a tiny bit by WordPress hooks and the highligthed keyword is no longer present in the content field.

Depending on the configuration it is also possible that the match is coming from the title or from a different selected custom field, which may not be part of the content, which is then not highlighted.