updated for version 7.0075
diff --git a/src/gui_w48.c b/src/gui_w48.c
index 48a87d9..4729f9b 100644
--- a/src/gui_w48.c
+++ b/src/gui_w48.c
@@ -2512,6 +2512,14 @@
RECT rcVim, rcOther, rcDest;
GetWindowRect(s_hwnd, &rcVim);
+
+ /* Check if the window is partly above or below the screen. We don't care
+ * about partly left or right of the screen, it is not relevant when
+ * scrolling up or down. */
+ if (rcVim.top < 0 || rcVim.bottom > GetSystemMetrics(SM_CYFULLSCREEN))
+ return SW_INVALIDATE;
+
+ /* Check if there is an window (partly) on top of us. */
for (hwnd = s_hwnd; (hwnd = GetWindow(hwnd, GW_HWNDPREV)) != (HWND)0; )
if (IsWindowVisible(hwnd))
{