truncate_string() now actually is utf-8 compatible

functions.php

@@ -821,8 +821,8 @@
 	}
 
 	function truncate_string($str, $max_len) {
-		if (mb_strlen($str) > $max_len - 3) {
-			return mb_substr($str, 0, $max_len) . "...";
+		if (mb_strlen($str, "utf-8") > $max_len - 3) {
+			return mb_substr($str, 0, $max_len, "utf-8") . "...";
 		} else {
 			return $str;
 		}