#!/usr/bin/perl
use warnings;
use strict;
use feature qw{ say };

sub single ($) { chr $_[0] }

sub two ($$) { join "", map chr, @_ }

say for split single 32, 'a b c';
say for split two(32, 32), 'a  b  c';
# This fails with "Too many arguments for main:two"
say for split two(32, 32), 'a  b  c';
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split can take more than one argument, so it greedily takes all it can.

> Unless this problem is fixed

It's not a problem, it's a documented behaviour.