diff --git a/src/wndproc.c b/src/wndproc.c
index 1d70959..55bf0f1 100644
--- a/src/wndproc.c
+++ b/src/wndproc.c
@@ -479,11 +479,16 @@ LRESULT CALLBACK fake_WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam
     }
     case WM_WINDOWPOSCHANGING:
     {
+        WINDOWPOS* pos = (WINDOWPOS*)lParam;
+
+        dbg_dump_swp_flags(pos->flags);
+        TRACE(
+            "     hwndInsertAfter=%p, x=%d, y=%d, cx=%d, cy=%d\n",
+            pos->hwndInsertAfter, pos->x, pos->y, pos->cx, pos->cy);
+
         /* workaround for a bug where sometimes a background window steals the focus */
         if (g_mouse_locked)
         {
-            WINDOWPOS* pos = (WINDOWPOS*)lParam;
-
             if (pos->flags == SWP_NOMOVE + SWP_NOSIZE)
             {
                 mouse_unlock();