http://bugs.winehq.org/show_bug.cgi?id=33124
--- Comment #2 from jtuc@users.sourceforge.net 2013-03-06 00:58:13 CST --- 1.5.25 makes no difference.
Related issue: GetWindowPlacement() should set WINDOWPLACEMENT::flags to the value that was provided upon a preceding call to SetWindowPlacement(). In other words, WINDOWPLACEMENT::flags should be part of the HWND's internal state.
The WPF_SETMINPOSITION flag should not control whether or not to copy coordinates from WINDOWPLACEMENT::ptMinPosition to the HWND's internal state. These should always be copied. WPF_SETMINPOSITION should rather be considered later when the window is actually about to minimize, to decide whether to apply the coordinates provided in WINDOWPLACEMENT::ptMinPosition.
Above shoulds result from empirical evidence on native XP and Vista.