Don't save falsy value

t-hamano · t-hamano · commit 047167c8f24c · 2025-07-31T16:44:42.000+09:00
diff --git a/packages/block-editor/src/hooks/anchor.js b/packages/block-editor/src/hooks/anchor.js
@@ -86,7 +86,7 @@ function BlockEditAnchorControlPure( { anchor, setAttributes } ) {
 				onChange={ ( nextValue ) => {
 					nextValue = nextValue.replace( ANCHOR_REGEX, '-' );
 					setAttributes( {
-						anchor: nextValue,
+						anchor: nextValue !== '' ? nextValue : undefined,
 					} );
 				} }
 				autoCapitalize="none"
