Master palette symbols: Search issue

MS 2.0.2 / Windows 7

Open the master palette symbols box from the score ("Z"). Put the word "notes" in the search box.
As might be expected, a whole series of notes appear but they cannot be selected. You have to remove the "s" in order to select them.

The problem appears to be that if you add extra letters to a recognised search term, the program still displays the old search results when it should be clearing them.