--- Message.pm_org	2024-12-22 21:09:32.256271405 +0900
+++ Message.pm_patch	2024-12-22 21:07:36.243814725 +0900
@@ -1297,6 +1297,7 @@ sub get_body_text_array_common {
       }
 
       # Add to rendered text
+      utf8::encode($rnd) if utf8::is_utf8($rnd);
       $text .= $rnd;
 
       # TVD - if there are multiple parts, what should we do?