diff --git a/wp-includes/interactivity-api/class-wp-interactivity-api.php b/wp-includes/interactivity-api/class-wp-interactivity-api.php
index fdde5d429a..0495af5f85 100644
--- a/wp-includes/interactivity-api/class-wp-interactivity-api.php
+++ b/wp-includes/interactivity-api/class-wp-interactivity-api.php
@@ -423,7 +423,7 @@ final class WP_Interactivity_API {
 			}
 
 			if ( $p->is_tag_closer() ) {
-				list( $opening_tag_name, $directives_prefixes ) = end( $tag_stack );
+				list( $opening_tag_name, $directives_prefixes ) = ! empty( $tag_stack ) ? end( $tag_stack ) : array( null, null );
 
 				if ( 0 === count( $tag_stack ) || $opening_tag_name !== $tag_name ) {
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 5a04f7ed45..cbd9c3b23f 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.9-alpha-60740';
+$wp_version = '6.9-alpha-60741';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.