Bug with Optimizer+

bug.php

<?php
class BugLoader extends php_user_filter
{

    public function filter($in, $out, &$consumed, $closing)
    {
        eval("class Test extends ArrayObject {}");
        return PSFS_PASS_ON;
    }
}

function dynamicInclude()
{
    return "php://filter/read=bug.test/resource=test.php";
}
echo "ArrayObject class ", class_exists('ArrayObject') ? 'exists' : 'not found';
stream_filter_register('bug.test', 'BugLoader');
include dynamicInclude();

OUTPUT

Fatal error: Class 'ArrayObject' not found in C:\Work\go\demos\bug.php(31) : eval()'d code on line 1

test.php

<?php
// empty file here