The doco says "Quick Search allows you to start typing a name and the focus will change to files or folders starting with that name."
However, if the Name column is not the left-most column, this feature does not work as described. What it seems to actually do is search the contents of whatever the left-most column contains. In my case, it was attributes. Thus it would only let me type "r" and "ra" in the quick search box as those were the only attributes in that particular folder.
