How to reproduce it :

• insert a search engine into a page with those parameters :
  • Contents : news
  • Current context
  • Following criteria : contents/news/endDate after (including) the value today
  • Abstract view with default rendering
• check that at least one news content have a startDate and a endDate on the current day without time. This content is the sample reference
• > the search engine does not return the sample content in the search results.

The problem seems to come from the time field because adding only a few hours on the endDatetime field of the sample content is enough to get the content on the search results.