Current CodeLite build for Windows x64, default install options, no compiler, Windows 8.1 x64 with latest updates. Problem is not specific to 7.1, neither to windows 8.1 - it has been observed for a long time with lots of earlier versions of CodeLite, as well as in Win7 x86.
make sure Workspace project/file list has at least several items. Click on any line, and do a quick search - start typing a name of any entry.
cursor jumps to first matching item and highlights it.
highlight does not move (it stays on the same line), but items are still being correctly searched for: press arrow up (or down) to see the effect - selection jumps up (or down) from the searched item, not the currently highlighted one.
I use this search frequently, I believe it is not too hard to fix it. Currently I have developed a workaround habit - type the file name, hit arrow up+down keys simultaneously to highlight the correct entry and press Enter to open it. Not exactly too convenient