WS_POPUP windows (excluding the WS_POPUPWINDOW windows) should be

windows/x11drv/event.c

@@ -737,7 +737,14 @@ static void EVENT_FocusOut( HWND hWnd, XFocusChangeEvent *event )
     if (event->detail != NotifyPointer)
         if (hWnd == GetForegroundWindow())
 	{
+            WND *pWnd = WIN_FindWndPtr(hWnd);
+
+            if( ((pWnd->dwStyle & WS_POPUP) == WS_POPUP) &&
+                ((pWnd->dwStyle & WS_POPUPWINDOW) != WS_POPUPWINDOW) )
+                SendMessageA(hWnd, WM_CLOSE, 0, 0 );
+            else
 	    SendMessageA( hWnd, WM_CANCELMODE, 0, 0 );
+            WIN_ReleaseWndPtr(pWnd);
 	    SetForegroundWindow( 0 );
 	}
 }