diff --git a/wp-includes/style-engine/class-wp-style-engine.php b/wp-includes/style-engine/class-wp-style-engine.php
index 8b16cdd467..1ba813ed65 100644
--- a/wp-includes/style-engine/class-wp-style-engine.php
+++ b/wp-includes/style-engine/class-wp-style-engine.php
@@ -470,6 +470,7 @@ final class WP_Style_Engine {
 			foreach ( $style_definition['classnames'] as $classname => $property_key ) {
 				if ( true === $property_key ) {
 					$classnames[] = $classname;
+					continue;
 				}
 
 				$slug = static::get_slug_from_preset_value( $style_value, $property_key );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 7bae5d3f0a..a67fbd5f8e 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.6-alpha-58310';
+$wp_version = '6.6-alpha-58311';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.