diff --git a/wp-includes/blocks.php b/wp-includes/blocks.php
index 591a7971ca..431e2b0153 100644
--- a/wp-includes/blocks.php
+++ b/wp-includes/blocks.php
@@ -757,6 +757,38 @@ function get_hooked_blocks() {
 	return $hooked_blocks;
 }
 
+/**
+ * Conditionally returns the markup for a given hooked block type.
+ *
+ * Accepts two arguments: A reference to an anchor block, and the name of a hooked block type.
+ * If the anchor block has already been processed, and the given hooked block type is in the list
+ * of ignored hooked blocks, an empty string is returned.
+ *
+ * This function is meant for internal use only.
+ *
+ * @since 6.5.0
+ * @access private
+ *
+ * @param array   $anchor_block      The anchor block. Passed by reference.
+ * @param string  $hooked_block_type The name of the hooked block type.
+ * @return string The markup for the given hooked block type, or an empty string if the block is ignored.
+ */
+function get_hooked_block_markup( &$anchor_block, $hooked_block_type ) {
+	if ( ! isset( $anchor_block['attrs']['metadata']['ignoredHookedBlocks'] ) ) {
+		$anchor_block['attrs']['metadata']['ignoredHookedBlocks'] = array();
+	}
+
+	if ( in_array( $hooked_block_type, $anchor_block['attrs']['metadata']['ignoredHookedBlocks'] ) ) {
+		return '';
+	}
+
+	// The following is only needed for the REST API endpoint.
+	// However, its presence does not affect the frontend.
+	$anchor_block['attrs']['metadata']['ignoredHookedBlocks'][] = $hooked_block_type;
+
+	return get_comment_delimited_block_content( $hooked_block_type, array(), '' );
+}
+
 /**
  * Returns a function that injects the theme attribute into, and hooked blocks before, a given block.
  *
@@ -813,7 +845,7 @@ function make_before_block_visitor( $hooked_blocks, $context ) {
 			 */
 			$hooked_block_types = apply_filters( 'hooked_block_types', $hooked_block_types, $relative_position, $anchor_block_type, $context );
 			foreach ( $hooked_block_types as $hooked_block_type ) {
-				$markup .= get_comment_delimited_block_content( $hooked_block_type, array(), '' );
+				$markup .= get_hooked_block_markup( $parent_block, $hooked_block_type );
 			}
 		}
 
@@ -826,7 +858,7 @@ function make_before_block_visitor( $hooked_blocks, $context ) {
 		/** This filter is documented in wp-includes/blocks.php */
 		$hooked_block_types = apply_filters( 'hooked_block_types', $hooked_block_types, $relative_position, $anchor_block_type, $context );
 		foreach ( $hooked_block_types as $hooked_block_type ) {
-			$markup .= get_comment_delimited_block_content( $hooked_block_type, array(), '' );
+			$markup .= get_hooked_block_markup( $block, $hooked_block_type );
 		}
 
 		return $markup;
@@ -874,7 +906,7 @@ function make_after_block_visitor( $hooked_blocks, $context ) {
 		/** This filter is documented in wp-includes/blocks.php */
 		$hooked_block_types = apply_filters( 'hooked_block_types', $hooked_block_types, $relative_position, $anchor_block_type, $context );
 		foreach ( $hooked_block_types as $hooked_block_type ) {
-			$markup .= get_comment_delimited_block_content( $hooked_block_type, array(), '' );
+			$markup .= get_hooked_block_markup( $block, $hooked_block_type );
 		}
 
 		if ( $parent_block && ! $next ) {
@@ -888,7 +920,7 @@ function make_after_block_visitor( $hooked_blocks, $context ) {
 			/** This filter is documented in wp-includes/blocks.php */
 			$hooked_block_types = apply_filters( 'hooked_block_types', $hooked_block_types, $relative_position, $anchor_block_type, $context );
 			foreach ( $hooked_block_types as $hooked_block_type ) {
-				$markup .= get_comment_delimited_block_content( $hooked_block_type, array(), '' );
+				$markup .= get_hooked_block_markup( $parent_block, $hooked_block_type );
 			}
 		}
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 3b6a8653cc..5cddc620db 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.5-alpha-57155';
+$wp_version = '6.5-alpha-57157';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.