Don't preserve empty anchor when transforming from Spacer block to Separator block

t-hamano · t-hamano · commit 9e9985c719c6 · 2025-07-31T16:55:04.000+09:00
diff --git a/packages/block-library/src/spacer/transforms.js b/packages/block-library/src/spacer/transforms.js
@@ -10,7 +10,7 @@ const transforms = {
 			blocks: [ 'core/separator' ], // Transform to Separator.
 			transform: ( { anchor } ) => {
 				return createBlock( 'core/separator', {
-					anchor: anchor || '',
+					anchor: anchor || undefined,
 				} );
 			},
 		},
