To repro: 1. Open String search window 2. Set the cursor on any of the visible strings in the list 3. Push Down Arrow button on your keyboard. 4. You will see that the cursor goes down the list and leaves the window. The list itself remains static which is not correct. It should be scrolling down (as it is in the operator search).
OK. Open example.wz4 file and try to find transform op by op search. There will be several hundreds of them. Put the cursor on the first one and push Down Arrow. It will scroll down with the cursor visible. This is the correct behaviour imho.
do you talk about the first dialog when you hit "search string" ? (find string dialog title) or the second one that appear (with title : "find class") when you click on a string in the first dialog ?
I'm talking about the list of the found ops (the lower one - the second one you mention) I can't remember how it's called, but this window appears after pressing Shift+C in stack window.
So, if you compare the list's behaviour of "find string" and "find class" (shift+c) you will see that the "find string" list window behaves incorrectly.
Oh yeah... Now that I have wz in front of me, I have to admit having made a storm in tea cup My idea initially was to be able to find something through scrolling in the first serarch list (which won't scroll). Now I see that any search behaves like you said. Sorry, mate. Maybe there still is a faint hope for implementing scrolling the first search list by up/down arrow keys?