http://bugs.winehq.org/show_bug.cgi?id=14792
--- Comment #7 from Nikolay Sivov bunglehead@gmail.com 2009-03-17 06:39:00 --- The reason seems to be in WM_GETTEXT handling which is wrong in builtin IP Address control. Control window should return formatted ip string as its window text. In current implementation control window text isn't ever updated since creation while it should contain '127.0.0.1' string for example. I'll be back with patch when find some spare time - a bunch of tests needed here.
P.S. component could be changed I think.