This doesn’t make sense. Perhaps while typing, it tries to display a quick preview of results and a complete search isn’t performed until hitting enter. If that is the case, the “No results found” message is misleading and people will give up at that point. The message should be changed to something like “Enter for full search”.
The search bar drop down responses are a different search, than the one which is done when enter is pressed, from what I understand. And, I agree the drop down results should indicate that more results might result by hitting enter.
Hey @mSpot, this is a bug, and thanks for reporting it. The search bar should absolutely have at least some of the results that are visible on the search page.