Thanks all for replying! I knew these two workarounds, but they're not as convenient as before. Previously after doing a scoped search, I could return to all notes just by two continuous clicks, first on the "Clear" button and then on the "All Notes" button. They are placed at the same place. I could return to all notes in 1 second. And now, it's at least 4 second... As I have so many notes, I cannot accept this overhead.