Committed a similar change.
I just installed a nightly build (built on or after Sep 22 2010) with svn release 5250. I've mapped F3 to Find Next Selection.
Now if a highlight a word -> f3 -> ctrl c and ctrl v to replace -> f3 will now search the the word that I copied and replaced.
preferred behavior ->
Now if a highlight a word -> f3 -> ctrl c and ctrl v to replace -> f3 -> ctrl c and ctrl v to replace -> f3
Am I doing something wrong?