Translations:Plasma/Application Dashboard/8/en

In both views the second line is where your search term is shown. To search simply type your search term. There is no need to click on the search line as this is no clickable field anyway. Generally in Application Dashboard clicking somewhere which is not a clickable field will close Application Dashboard. So in any case you are in panic because you don't know how to get out of the application windows, just click on an empty area and you are free!