From 19743bbe4ae8ecc11bf3a7879f41c15085c4a922 Mon Sep 17 00:00:00 2001
From: Sam Reid <reids@colorado.edu>
Date: Fri, 18 Feb 2022 17:38:43 -0700
Subject: [PATCH] Don't animate the carousel while setting phet-io state, see
 https://github.com/phetsims/circuit-construction-kit-common/issues/841

---
 js/Carousel.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/js/Carousel.js b/js/Carousel.js
index c3c09a13..b70be401 100644
--- a/js/Carousel.js
+++ b/js/Carousel.js
@@ -284,7 +284,9 @@ class Carousel extends Node {
       // stop any animation that's in progress
       scrollAnimation && scrollAnimation.stop();
 
-      if ( this._animationEnabled ) {
+      // Only animate if animation is enabled and PhET-iO state is not being set.  When PhET-iO state is being set (as
+      // in loading a customized state), the carousel should immediately reflect the desired page
+      if ( this._animationEnabled && !phet.joist.sim.isSettingPhetioStateProperty.value ) {
 
         // options that are independent of orientation
         let animationOptions = {