From 114dd37c6ec1a12d2fab752bae57a0d6e206e996 Mon Sep 17 00:00:00 2001
From: Vincent Sanders <vince@kyllikki.org>
Date: Sun, 24 May 2020 16:49:45 +0100
Subject: [PATCH] fix RISC OS corewindows incorrectly becoming visible when
 scroll extents are set

---
 frontends/riscos/corewindow.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/frontends/riscos/corewindow.c b/frontends/riscos/corewindow.c
index bc1fb7785..2ef05da29 100644
--- a/frontends/riscos/corewindow.c
+++ b/frontends/riscos/corewindow.c
@@ -889,7 +889,11 @@ ro_cw_set_scroll(struct core_window *cw, int x, int y)
 	state.xscroll =  x * 2;
 	state.yscroll = -y * 2;
 
-	ro_cw_open(PTR_WIMP_OPEN(&state));
+	/* only update the window if it is open */
+	if (state.flags & wimp_WINDOW_OPEN) {
+		update_scrollbars(ro_cw, PTR_WIMP_OPEN(&state));
+	}
+
 	return NSERROR_OK;
 }