--- lib/i18n/interpolate/ruby.rb.orig	2023-06-02 05:26:32 UTC
+++ lib/i18n/interpolate/ruby.rb
@@ -47,7 +47,7 @@ module I18n
         end
       end
 
-      interpolated ? interpolated_string : string
+      interpolated ? interpolated_string : string.dup
     end
   end
 end