diff --git a/wp-includes/class-wp-duotone.php b/wp-includes/class-wp-duotone.php
index 1bb8bea5cd..813258c10d 100644
--- a/wp-includes/class-wp-duotone.php
+++ b/wp-includes/class-wp-duotone.php
@@ -1074,7 +1074,7 @@ class WP_Duotone {
 	 * @return string Filtered block content.
 	 */
 	public static function render_duotone_support( $block_content, $block, $wp_block ) {
-		if ( empty( $block_content ) || ! $block['blockName'] ) {
+		if ( ! $block['blockName'] ) {
 			return $block_content;
 		}
 		$duotone_selector = self::get_selector( $wp_block->block_type );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index d5ab2ba8bf..a7d97e41bb 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.4-RC1-56995';
+$wp_version = '6.4-RC1-56997';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.