If the search box is empty and you click outside of it to remove the focus away from it, this exits search. What happens currently, though, is that the search box becomes gray, but the view below remains. What should happen instead, though, is that we switch to the default view (e.g. the tree view in Pages).

Note that this issue doesn't need fixing, if we implement the new way that search works - by just applying a filter on the existing set of items shown by a view. In this case, we for one never leave the view we previously where and two, by just emptying the box, we'll show all elements again, which is exactly what is required to end search.