From 06ee5e14d06beecdf26e07afaae6b4a5d47eaef8 Mon Sep 17 00:00:00 2001
From: Mayank Tripathi <70465598+Mayank-Tripathi32@users.noreply.github.com>
Date: Wed, 22 Jan 2025 13:29:22 +0530
Subject: [PATCH] Spacer: Fix flex layout unit reset (#68815)

Co-authored-by: Mayank-Tripathi32 <mayanktripathi32@git.wordpress.org>
Co-authored-by: carolinan <poena@git.wordpress.org>
Co-authored-by: Mamaduka <mamaduka@git.wordpress.org>
Co-authored-by: ndiego <ndiego@git.wordpress.org>
Co-authored-by: stokesman <presstoke@git.wordpress.org>
Co-authored-by: hanneslsm <hanneslsm@git.wordpress.org>
---
 packages/block-library/src/spacer/edit.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/block-library/src/spacer/edit.js b/packages/block-library/src/spacer/edit.js
index 1e0ffb9700d685..af84edf7baf657 100644
--- a/packages/block-library/src/spacer/edit.js
+++ b/packages/block-library/src/spacer/edit.js
@@ -260,7 +260,7 @@ const SpacerEdit = ( {
 			isFlexLayout &&
 			selfStretch !== 'fill' &&
 			selfStretch !== 'fit' &&
-			! flexSize
+			flexSize === undefined
 		) {
 			if ( inheritedOrientation === 'horizontal' ) {
 				// If spacer is moving from a vertical container to a horizontal container,