diff --git src/wp-comments-post.php src/wp-comments-post.php
index 5c33e87fd3..fe03cb7296 100644
--- src/wp-comments-post.php
+++ src/wp-comments-post.php
@@ -56,6 +56,17 @@ do_action( 'set_comment_cookies', $comment, $user, $cookies_consent );
 
 $location = empty( $_POST['redirect_to'] ) ? get_comment_link( $comment ) : $_POST['redirect_to'] . '#comment-' . $comment->comment_ID;
 
+// Add specific query arguments to display the awaiting moderation message.
+if ( 'unapproved' === wp_get_comment_status( $comment ) && ! empty( $comment->comment_author_email ) ) {
+	$location = add_query_arg(
+		array(
+			'unapproved'      => $comment->comment_ID,
+			'moderation-hash' => wp_hash( $comment->comment_date_gmt ),
+		),
+		$location
+	);
+}
+
 /**
  * Filters the location URI to send the commenter after posting.
  *
diff --git src/wp-includes/comment-template.php src/wp-includes/comment-template.php
index 918238f7fa..2664fd8fdf 100644
--- src/wp-includes/comment-template.php
+++ src/wp-includes/comment-template.php
@@ -1372,8 +1372,12 @@ function comments_template( $file = '/comments.php', $separate_comments = false
 
 	if ( $user_ID ) {
 		$comment_args['include_unapproved'] = array( $user_ID );
-	} elseif ( ! empty( $comment_author_email ) ) {
-		$comment_args['include_unapproved'] = array( $comment_author_email );
+	} else {
+		$unapproved_email = wp_get_unapproved_comment_author_email();
+
+		if ( ! empty( $unapproved_email ) ) {
+			$comment_args['include_unapproved'] = array( $unapproved_email );
+		}
 	}
 
 	$per_page = 0;
@@ -1690,7 +1694,15 @@ function get_comment_reply_link( $args = array(), $comment = null, $post = null
 
 		$link = sprintf(
 			"<a rel='nofollow' class='comment-reply-link' href='%s' %s aria-label='%s'>%s</a>",
-			esc_url( add_query_arg( 'replytocom', $comment->comment_ID ) ) . '#' . $args['respond_id'],
+			esc_url(
+				add_query_arg(
+					array(
+						'replytocom'      => $comment->comment_ID,
+						'unapproved'      => false,
+						'moderation-hash' => false,
+					)
+				)
+			) . '#' . $args['respond_id'],
 			$data_attribute_string,
 			esc_attr( sprintf( $args['reply_to_text'], $comment->comment_author ) ),
 			$args['reply_text']
@@ -1832,7 +1844,7 @@ function get_cancel_comment_reply_link( $text = '' ) {
 	}
 
 	$style = isset( $_GET['replytocom'] ) ? '' : ' style="display:none;"';
-	$link  = esc_html( remove_query_arg( 'replytocom' ) ) . '#respond';
+	$link  = esc_html( remove_query_arg( array( 'replytocom', 'unapproved', 'moderation-hash' ) ) ) . '#respond';
 
 	$formatted_link = '<a rel="nofollow" id="cancel-comment-reply-link" href="' . $link . '"' . $style . '>' . $text . '</a>';
 
@@ -2055,9 +2067,10 @@ function wp_list_comments( $args = array(), $comments = null ) {
 				if ( is_user_logged_in() ) {
 					$comment_args['include_unapproved'] = get_current_user_id();
 				} else {
-					$commenter = wp_get_current_commenter();
-					if ( $commenter['comment_author_email'] ) {
-						$comment_args['include_unapproved'] = $commenter['comment_author_email'];
+					$unapproved_email = wp_get_unapproved_comment_author_email();
+
+					if ( ! empty( $unapproved_email ) ) {
+						$comment_args['include_unapproved'] = array( $unapproved_email );
 					}
 				}
 
diff --git src/wp-includes/comment.php src/wp-includes/comment.php
index e95d395cce..14e72604a8 100644
--- src/wp-includes/comment.php
+++ src/wp-includes/comment.php
@@ -1768,6 +1768,30 @@ function wp_get_current_commenter() {
 	return apply_filters( 'wp_get_current_commenter', compact( 'comment_author', 'comment_author_email', 'comment_author_url' ) );
 }
 
+/**
+ * Get unapproved comment author's email.
+ *
+ * Used to allow the commenter to see their pending comment.
+ *
+ * @since 5.1.0
+ *
+ * @return string The unapproved comment author's email (when supplied).
+ */
+function wp_get_unapproved_comment_author_email() {
+	$commenter_email = '';
+
+	if ( ! empty( $_GET['unapproved'] ) && ! empty( $_GET['moderation-hash'] ) ) {
+		$comment_id = (int) $_GET['unapproved'];
+		$comment    = get_comment( $comment_id );
+
+		if ( $comment && hash_equals( $_GET['moderation-hash'], wp_hash( $comment->comment_date_gmt ) ) ) {
+			$commenter_email = $comment->comment_author_email;
+		}
+	}
+
+	return $commenter_email;
+}
+
 /**
  * Inserts a comment into the database.
  *
diff --git tests/phpunit/tests/comment/commentsTemplate.php tests/phpunit/tests/comment/commentsTemplate.php
index 2b22d2d268..a81d732510 100644
--- tests/phpunit/tests/comment/commentsTemplate.php
+++ tests/phpunit/tests/comment/commentsTemplate.php
@@ -831,6 +831,40 @@ class Tests_Comment_CommentsTemplate extends WP_UnitTestCase {
 		return $commenter;
 	}
 
+	/**
+	 * @ticket 43857
+	 */
+	public function test_comments_list_should_include_just_posted_unapproved_comment() {
+		$now = time();
+		$p   = self::factory()->post->create();
+		$c   = self::factory()->comment->create(
+			array(
+				'comment_post_ID'  => $p,
+				'comment_content'  => '1',
+				'comment_approved' => '0',
+				'comment_date_gmt' => date( 'Y-m-d H:i:s', $now ),
+				'comment_author_email' => 'foo@bar.mail',
+			)
+		);
+		$comment = get_comment( $c );
+
+		$this->go_to( add_query_arg(
+			array(
+				'unapproved'      => $comment->comment_ID,
+				'moderation-hash' => wp_hash( $comment->comment_date_gmt ),
+			),
+			get_comment_link( $comment )
+		) );
+
+		$found = get_echo( 'comments_template' );
+
+		// Find the found comment in the markup.
+		preg_match( '|id="comment-([0-9]+)|', $found, $matches );
+
+		$found_cid = (int) $matches[1];
+		$this->assertSame( $c, $found_cid );
+	}
+
 	/**
 	 * @ticket 35378
 	 */