diff -r be944660c56a -r 3d72ae0968f4 wp/wp-includes/blocks/block.php
--- a/wp/wp-includes/blocks/block.php	Wed Sep 21 18:19:35 2022 +0200
+++ b/wp/wp-includes/blocks/block.php	Tue Sep 27 16:37:53 2022 +0200
@@ -42,9 +42,14 @@
 
 	$seen_refs[ $attributes['ref'] ] = true;
 
-	$result = do_blocks( $reusable_block->post_content );
+	// Handle embeds for reusable blocks.
+	global $wp_embed;
+	$content = $wp_embed->run_shortcode( $reusable_block->post_content );
+	$content = $wp_embed->autoembed( $content );
+
+	$content = do_blocks( $content );
 	unset( $seen_refs[ $attributes['ref'] ] );
-	return $result;
+	return $content;
 }
 
 /**