Ever since upgrading my Windows EN client to version 6.4.2.3788, I have had an issue with the following behavior, when using Note List View "top list" or "side list":
When you click and drag the note list window scroll bar up to the top, it bounces back down so that the top notes are not showing. The scrolling in the note list works correctly if you left click on the scroll up button. It also works if you select a note in the list and then press the "home" button. The ability to drag the note list scroll bar to the top worked in previous versions of the windows client.
I am on a 64-bit Intel PC, MS Windows 7 Pro SP1 (64-bit) OS. This issue is the same on both my home and work computers. Same hardware and OS.