diff --git a/wp-includes/block-editor.php b/wp-includes/block-editor.php
index ba92c0ec3f..7b63490a8a 100644
--- a/wp-includes/block-editor.php
+++ b/wp-includes/block-editor.php
@@ -359,11 +359,24 @@ function _wp_get_iframed_editor_assets() {
 		}
 	}
 
+	/**
+	 * Remove the deprecated `print_emoji_styles` handler.
+	 * It avoids breaking style generation with a deprecation message.
+	 */
+	$has_emoji_styles = has_action( 'wp_print_styles', 'print_emoji_styles' );
+	if ( $has_emoji_styles ) {
+		remove_action( 'wp_print_styles', 'print_emoji_styles' );
+	}
+
 	ob_start();
 	wp_print_styles();
 	wp_print_font_faces();
 	$styles = ob_get_clean();
 
+	if ( $has_emoji_styles ) {
+		add_action( 'wp_print_styles', 'print_emoji_styles' );
+	}
+
 	ob_start();
 	wp_print_head_scripts();
 	wp_print_footer_scripts();
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 9da69a1742..6d3cd2c712 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.4-alpha-56705';
+$wp_version = '6.4-alpha-56706';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.