Index: src/wp-includes/embed-template.php
===================================================================
--- src/wp-includes/embed-template.php	(revision 35087)
+++ src/wp-includes/embed-template.php	(working copy)
@@ -163,7 +163,7 @@
 										'%s <span class="screen-reader-text">Comments</span>',
 										get_comments_number()
 									),
-									absint( get_comments_number() )
+									number_format_i18n( get_comments_number() )
 								);
 								?>
 							</a>