diff --git a/wp-includes/post-template.php b/wp-includes/post-template.php
index de395cebd2..ddb5180117 100644
--- a/wp-includes/post-template.php
+++ b/wp-includes/post-template.php
@@ -368,26 +368,9 @@ function get_the_content( $more_link_text = null, $strip_teaser = false, $post =
 		}
 	}
 
-	if ( $preview ) { // Preview fix for JavaScript bug with foreign languages.
-		$output = preg_replace_callback( '/\%u([0-9A-F]{4})/', '_convert_urlencoded_to_entities', $output );
-	}
-
 	return $output;
 }
 
-/**
- * Preview fix for JavaScript bug with foreign languages.
- *
- * @since 3.1.0
- * @access private
- *
- * @param array $match Match array from preg_replace_callback.
- * @return string
- */
-function _convert_urlencoded_to_entities( $match ) {
-	return '&#' . base_convert( $match[1], 16, 10 ) . ';';
-}
-
 /**
  * Display the post excerpt.
  *
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 116b871ff5..ee306126ce 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-45934';
+$wp_version = '5.3-alpha-45935';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.