diff --git a/wp-includes/script-loader.php b/wp-includes/script-loader.php
index e4ec2088f0..3f685da67a 100644
--- a/wp-includes/script-loader.php
+++ b/wp-includes/script-loader.php
@@ -2732,6 +2732,10 @@ function wp_maybe_inline_styles() {
  * @since 5.8.0
  */
 function wp_add_iframed_editor_assets_html() {
+	if ( ! wp_should_load_block_editor_scripts_and_styles() ) {
+		return;
+	}
+
 	$script_handles = array();
 	$style_handles  = array(
 		'wp-block-editor',
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 8ac716bc1c..f1be7a1d6e 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-51539';
+$wp_version = '5.9-alpha-51540';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.