Hi is anyone else having a problem with Plack::Session? I'm running this code :

use Plack::Builder;
use Plack::Session;
use Data::Dumper;


  my $app = sub {
      my $env = shift;
      my $session = Plack::Session->new($env);

      $session->set('counter',$session->get('counter')+1);

      my $dumped = Dumper($session);
      return [
          200,
          [ 'Content-Type' => 'text/plain' ],
          [ $dumped ],
      ];
  };


  builder {
      enable 'Session';
      $app;
  };
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with the standard command line :

plackup action.psgi
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And it is not behaving as expected!

The output is as expected and looks like this:

$VAR1 = bless( {
                 'options' => {
                                'id' => 'c433450e1163097fc6d53bf06ac89
+3c89a9d0a78'
                              },
                 'session' => {
                                'counter' => 15
                              }
               }, 'Plack::Session' );
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However, on each click of refresh, the counter is being incremented twice and sometimes 3 times, for no apparent reason.

Odd? I've tried various other variations on the above, including the standard code given in the documentation on CPAN, still the same effect occurs.