use strict;
use v5.14;
use utf8;
use Template;

my $value = "...."; #some unicode text with wide characters here
my $template = Template->new();
my $result = [ ];

$template->process( "1.tt", { value => $value }, $result );

say @$result;
[download]

And i got warning:
Wide character in say at 1.pl line 17.