Don't check children of minimized windows in get_update_region.
diff --git a/server/window.c b/server/window.c
index 88dfe8f..5143808 100644
--- a/server/window.c
+++ b/server/window.c
@@ -1627,7 +1627,8 @@
{
/* if window doesn't need any repaint, check the children */
if (!(flags & UPDATE_NOCHILDREN) &&
- ((flags & UPDATE_ALLCHILDREN) || (win->style & WS_CLIPCHILDREN)))
+ ((flags & UPDATE_ALLCHILDREN) || (win->style & WS_CLIPCHILDREN)) &&
+ !(win->style & WS_MINIMIZE))
{
reply->flags = get_child_update_flags( win, flags, &win );
}