diff --git a/src/wp-includes/class-wp-theme-json-resolver.php b/src/wp-includes/class-wp-theme-json-resolver.php
index a92f5c1e09f4f..0c683b611870b 100644
--- a/src/wp-includes/class-wp-theme-json-resolver.php
+++ b/src/wp-includes/class-wp-theme-json-resolver.php
@@ -70,6 +70,14 @@ class WP_Theme_JSON_Resolver {
 	 */
 	protected static $i18n_schema = null;
 
+	/**
+	 * Stores the theme json styles from the theme.json file.
+	 * @since 6.1.0
+	 * @var string
+	 * @access private
+	 */
+	protected static $theme_json_file_data = null;
+
 	/**
 	 * Processes a file that adheres to the theme.json schema
 	 * and returns an array with its contents, or a void array if none found.
@@ -178,31 +186,32 @@ public static function get_theme_data( $deprecated = array(), $options = array()
 
 		$options = wp_parse_args( $options, array( 'with_supports' => true ) );
 
-		if ( null === static::$theme ) {
-			$theme_json_data = static::read_json_file( static::get_file_path_from_theme( 'theme.json' ) );
-			$theme_json_data = static::translate( $theme_json_data, wp_get_theme()->get( 'TextDomain' ) );
-			/**
-			 * Filters the data provided by the theme for global styles & settings.
-			 *
-			 * @since 6.1.0
-			 *
-			 * @param WP_Theme_JSON_Data Class to access and update the underlying data.
-			 */
-			$theme_json      = apply_filters( 'theme_json_theme', new WP_Theme_JSON_Data( $theme_json_data, 'theme' ) );
-			$theme_json_data = $theme_json->get_data();
-			static::$theme   = new WP_Theme_JSON( $theme_json_data );
-
-			if ( wp_get_theme()->parent() ) {
-				// Get parent theme.json.
-				$parent_theme_json_data = static::read_json_file( static::get_file_path_from_theme( 'theme.json', true ) );
-				$parent_theme_json_data = static::translate( $parent_theme_json_data, wp_get_theme()->parent()->get( 'TextDomain' ) );
-				$parent_theme           = new WP_Theme_JSON( $parent_theme_json_data );
-
-				// Merge the child theme.json into the parent theme.json.
-				// The child theme takes precedence over the parent.
-				$parent_theme->merge( static::$theme );
-				static::$theme = $parent_theme;
-			}
+		if ( null === static::$theme_json_file_data ) {
+			static::$theme_json_file_data = static::read_json_file( static::get_file_path_from_theme( 'theme.json' ) );
+			static::$theme_json_file_data = static::translate( static::$theme_json_file_data, wp_get_theme()->get( 'TextDomain' ) );
+		}
+
+		/**
+		 * Filters the data provided by the theme for global styles & settings.
+		 *
+		 * @since 6.1.0
+		 *
+		 * @param WP_Theme_JSON_Data Class to access and update the underlying data.
+		 */
+		$theme_json              = apply_filters( 'theme_json_theme', new WP_Theme_JSON_Data( static::$theme_json_file_data, 'theme' ) );
+		$theme_json_data         = $theme_json->get_data();
+		static::$theme           = new WP_Theme_JSON( $theme_json_data );
+
+		if ( wp_get_theme()->parent() ) {
+			// Get parent theme.json.
+			$parent_theme_json_data = static::read_json_file( static::get_file_path_from_theme( 'theme.json', true ) );
+			$parent_theme_json_data = static::translate( $parent_theme_json_data, wp_get_theme()->parent()->get( 'TextDomain' ) );
+			$parent_theme           = new WP_Theme_JSON( $parent_theme_json_data );
+
+			// Merge the child theme.json into the parent theme.json.
+			// The child theme takes precedence over the parent.
+			$parent_theme->merge( static::$theme );
+			static::$theme = $parent_theme;
 		}
 
 		if ( ! $options['with_supports'] ) {