When I call plasma search (alt-space) and start to type, the option that is under the mouse pointer at that moment is selected for execution (when pressing enter) instead of the top option. This means to to use plasma search, I need to move the mouse pointer away form the results area first. Sorry, I can screen shot the behaviour because the screenshot utility minimizes plasma-search before taking the screenshot (which is also a bug imho).
*** This bug has been marked as a duplicate of bug 372635 ***