http://bugs.winehq.org/show_bug.cgi?id=12525
--- Comment #2 from Reece Dunn msclrhd@gmail.com 2008-04-12 03:55:30 --- This is using Ubuntu 7.10 (Gnome). I don't know if it started happening recently, as I have just started doing random(ish) application testing.
If the focus is restored to a dialog (e.g. the one in bug 12527), then the focus rect is drawn on the radio button that has the focus.
It looks like this is where there is a window with a client window that is an edit control (this may be applicable to other controls in the client area, but haven't checked). It could be either a WM_SETFOCUS that is not being sent properly by the parent window, or a WM_ACTIVATEAPP message that isn't being called (Windows sends a WM_ACTIVATEAPP message when you move onto an application, e.g. using Ctrl+Tab).