From df67551fe046e73fe1d065e9d1fce72f221a4724 Mon Sep 17 00:00:00 2001
From: Robert Flack <flackr@chromium.org>
Date: Wed, 16 Nov 2022 22:09:38 +0000
Subject: [PATCH] [web-animations-1] Maintain start time when changing playback
 rate on non-monotonic timeline

---
 web-animations-1/Overview.bs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/web-animations-1/Overview.bs b/web-animations-1/Overview.bs
index bcd097fcbee..7c5f64475f4 100644
--- a/web-animations-1/Overview.bs
+++ b/web-animations-1/Overview.bs
@@ -1846,7 +1846,8 @@ is as follows:
 
 1.  Set the [=playback rate=] to <var>new playback rate</var>.
 
-1.  If <var>previous time</var> is <a lt="unresolved">resolved</a>,
+1.  If the <var>animation</var> is associated with a [=monotonically increasing=]
+    [=timeline=] and <var>previous time</var> is <a lt="unresolved">resolved</a>,
     <a>set the current time</a> of <var>animation</var> to
     <var>previous time</var>