Index: src/wp-includes/comment-template.php
===================================================================
--- src/wp-includes/comment-template.php	(revision 46072)
+++ src/wp-includes/comment-template.php	(working copy)
@@ -2439,6 +2439,21 @@
 				$comment_fields = array( 'comment' => $args['comment_field'] ) + (array) $args['fields'];
 
 				/**
+				 * Check for the presence of id="email-notes" in the
+				 * comment_notes_before to remove aria-describedby in the
+				 * email field.
+				 *
+				 * @since 5.3.0
+				 */
+				if( false === strpos( $args['comment_notes_before'], 'id="email-notes"' ) ) {
+					$comment_fields['email'] = str_replace(
+						' aria-describedby="email-notes"',
+						'',
+						$comment_fields['email']
+					);
+				}
+
+				/**
 				 * Filters the comment form fields, including the textarea.
 				 *
 				 * @since 4.4.0