See NetBeans Search Results Files Open in Output Panel Instead of Main Panel. Happened to me too! Easy fix is to click Window -> Reset Windows!
So I’m still used to pressing WinKey+R (AKA Meta+R) to bring up a command prompt. I added the Search and Launch widget to my default panel in KDE Plasma, then right-clicked on it and selected “Search Settings…”. From there I could bind an appropriate keyboard shortcut.
Everything you need to know about MySQL Full-Text Search Functions.