While using the bookmark sidebar, I would normally type in a letter or letters in the name of the desired bookmark I am searching for, correspondingly, all bookmarks that include the letters I am typing appear narrowing my search until I locate the desired bookmark. The problem now is that when I type in a letter an no bookmarks appear. All other bookmarks disappear until I clear the box, upon which they return, however no bookmarks are searched when I use the bookmark search box.