In earlier versions I would initiate an advanced search which opens a dialog window where I enter the search string. A list of every instance of the string would appear. I could then click on any instance and the reader would display this instance within my document.
I could then use my up or down arrow to advance within this search window and the reader would automaticaly advance to the next instance within my document.
Here is what has changed:
Now when I use the up or down arrow, all that happens is that the search window highlight moves but the next instance of the search string to not found and highlghted within my document.