diff --git a/wp-includes/blocks.php b/wp-includes/blocks.php
index 9b1884c660..c747fe9426 100644
--- a/wp-includes/blocks.php
+++ b/wp-includes/blocks.php
@@ -219,7 +219,7 @@ function register_block_style_handle( $metadata, $field_name, $index = 0 ) {
 	// Check whether styles should have a ".min" suffix or not.
 	$suffix = SCRIPT_DEBUG ? '' : '.min';
 	if ( $is_core_block ) {
-		$style_path = "style$suffix.css";
+		$style_path = ( 'editorStyle' === $field_name ) ? "editor{$suffix}.css" : "style{$suffix}.css";
 	}
 
 	$style_path_norm = wp_normalize_path( realpath( dirname( $metadata['file'] ) . '/' . $style_path ) );
@@ -239,7 +239,8 @@ function register_block_style_handle( $metadata, $field_name, $index = 0 ) {
 		if ( $is_theme_block ) {
 			$style_uri = get_theme_file_uri( str_replace( $theme_path_norm, '', $style_path_norm ) );
 		} elseif ( $is_core_block ) {
-			$style_uri = includes_url( 'blocks/' . str_replace( 'core/', '', $metadata['name'] ) . "/style$suffix.css" );
+			// All possible $style_path variants for core blocks are hard-coded above.
+			$style_uri = includes_url( 'blocks/' . str_replace( 'core/', '', $metadata['name'] ) . '/' . $style_path );
 		}
 	} else {
 		$style_uri = false;
diff --git a/wp-includes/version.php b/wp-includes/version.php
index b96862498d..d4cb4ff47c 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.3-alpha-56004';
+$wp_version = '6.3-alpha-56005';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.