Steps to produce:

1. Install web logs sample data
2. Open discover and select kibana_sample_data_logs. Remove all columns so document is displayed in table. Save search
3. Apply the search geo.src : "CN". Notice how search results are highlighted. And in response, there is a highlight
   
   block.
4. Create dashboard and add saved search, apply filter geo.src : "CN". Notice how there is no highlighting. I would expect highlighiting to behave the same whether I am looking at a saved search in Discover or Dashboard.