diff --git a/packages/block-library/src/button/edit.js b/packages/block-library/src/button/edit.js
index 97775bc0bcd10a..82be2fd4289a9f 100644
--- a/packages/block-library/src/button/edit.js
+++ b/packages/block-library/src/button/edit.js
@@ -218,7 +218,8 @@ function ButtonEdit( props ) {
 						setIsEditingURL( false );
 						richTextRef.current?.focus();
 					} }
-					anchorRef={ ref?.current }
+					// `anchor` should never be `null`
+					anchor={ ref.current ?? undefined }
 					focusOnMount={ isEditingURL ? 'firstElement' : false }
 					__unstableSlotName={ '__unstable-block-tools-after' }
 					shift