wp core update 6.6

wp/wp-includes/block-supports/shadow.php

@@ -43,6 +43,7 @@ function wp_register_shadow_support( $block_type ) {
  * This will be applied to the block markup in the front-end.
  *
  * @since 6.3.0
+ * @since 6.6.0 Return early if __experimentalSkipSerialization is true.
  * @access private
  *
  * @param  WP_Block_Type $block_type       Block type.
@@ -52,7 +53,10 @@ function wp_register_shadow_support( $block_type ) {
 function wp_apply_shadow_support( $block_type, $block_attributes ) {
 	$has_shadow_support = block_has_support( $block_type, 'shadow', false );
 
-	if ( ! $has_shadow_support ) {
+	if (
+		! $has_shadow_support ||
+		wp_should_skip_block_supports_serialization( $block_type, 'shadow' )
+	) {
 		return array();
 	}