From 58ed8d640aa94ff56e17d5d727d039d828583441 Mon Sep 17 00:00:00 2001
From: Daniel Richards <daniel.richards@automattic.com>
Date: Thu, 11 Jun 2020 15:31:09 +0800
Subject: [PATCH] Fix undefined ref when attempting to move group blocks

---
 .../src/components/use-moving-animation/index.js   | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/packages/block-editor/src/components/use-moving-animation/index.js b/packages/block-editor/src/components/use-moving-animation/index.js
index 8f250e2421065..d23ff4d5d11bc 100644
--- a/packages/block-editor/src/components/use-moving-animation/index.js
+++ b/packages/block-editor/src/components/use-moving-animation/index.js
@@ -135,11 +135,15 @@ function useMovingAnimation(
 				scrollContainer.current.scrollTop = transform.scrollTop + y;
 			}
 
-			ref.current.style.transformOrigin = 'center';
-			ref.current.style.transform =
-				x === 0 && y === 0 ? null : `translate3d(${ x }px,${ y }px,0)`;
-			ref.current.style.zIndex =
-				! isSelected || ( x === 0 && y === 0 ) ? null : '1';
+			if ( ref.current ) {
+				ref.current.style.transformOrigin = 'center';
+				ref.current.style.transform =
+					x === 0 && y === 0
+						? null
+						: `translate3d(${ x }px,${ y }px,0)`;
+				ref.current.style.zIndex =
+					! isSelected || ( x === 0 && y === 0 ) ? null : '1';
+			}
 		},
 	} );
 }