It's happening with everyone. The invisibility with results from the search function is tied to the embedded YouTube videos that also vanish. If you are able to, you should try to enable the scripts located near the search bar of whatever browser you are using (I'm using Chrome so I left-click on the black and white shield with an "x" by it and select, "Load Unsafe Scripts"). That should fix the problem. This site somehow defaults itself to secure which is causing this mishap.
_________________
[Inactive - I have left WP permanently]