http://bugs.winehq.org/show_bug.cgi?id=16184
--- Comment #1 from markk@clara.co.uk 2010-04-17 08:12:19 --- On testing with Wine 1.1.42 and idafree49.exe, these issues no longer appear to be present. The initial highlighted state in Wine matches that in Windows. I couldn't reproduce the second issue (entering a comment, differing behaviour) in Windows.
I did notice another highlighting issue though, which I will open a separate bug for.