Arrays of Records in PL/Perl

Hackers,

Given this script:
   BEGIN;
   CREATE TYPE foo AS ( this int, that int );
   CREATE OR REPLACE FUNCTION dump(foo[]) returns text language plperlu AS $$       use Data::Dumper; Dumper shift;
$$;
   CREATE OR REPLACE FUNCTION dump(foo) returns text language plperlu AS $$       use Data::Dumper; Dumper shift;   $$;
   select dump(row(3, 5)::foo);   select dump(ARRAY[row(3, 5)::foo]);
   ROLLBACK;

The output is:
              dump              --------------------------    $VAR1 = {               +              'that' => '5',+
         'this' => '3' +            };              +   (1 row) 
   Time: 0.936 ms            dump            ----------------------    $VAR1 = '{"(3,5)"}';+   (1 row)

That is, if a record is passed to a PL/Perl function, it's correctly converted into a hash. If, however, an array of
recordsare passed, the record are stringified, rather than turned into hashes. This seems inconsistent. Bug? 

Thanks,

David