diff --git a/src/wp-includes/block-template-utils.php b/src/wp-includes/block-template-utils.php
index 3b57d9afa4..826237aa18 100644
--- a/src/wp-includes/block-template-utils.php
+++ b/src/wp-includes/block-template-utils.php
@@ -351,7 +351,7 @@ function _add_block_template_info( $template_item ) {
 		return $template_item;
 	}
 
-	$theme_data = WP_Theme_JSON_Resolver::get_theme_data()->get_custom_templates();
+	$theme_data = WP_Theme_JSON_Resolver::get_theme_data( array(), array( 'with_supports' => false ) )->get_custom_templates();
 	if ( isset( $theme_data[ $template_item['slug'] ] ) ) {
 		$template_item['title']     = $theme_data[ $template_item['slug'] ]['title'];
 		$template_item['postTypes'] = $theme_data[ $template_item['slug'] ]['postTypes'];
@@ -371,7 +371,7 @@ function _add_block_template_info( $template_item ) {
  */
 function _add_block_template_part_area_info( $template_info ) {
 	if ( WP_Theme_JSON_Resolver::theme_has_support() ) {
-		$theme_data = WP_Theme_JSON_Resolver::get_theme_data()->get_template_parts();
+		$theme_data = WP_Theme_JSON_Resolver::get_theme_data( array(), array( 'with_supports' => false ) )->get_template_parts();
 	}
 
 	if ( isset( $theme_data[ $template_info['slug'] ]['area'] ) ) {