cphalcon: $app->persistent (Session bag) fatal error on 3.2.0 (Invalid superglobal)

Expected and Actual Behavior

Trying to use persistent global variable as usual in Phalcon Micro

Now this is truly “the bug”. Everything working fine on 3.1.2. From 3.2.0 entire app breaks with fatal error.

2017/06/21 12:36:13 [error] 399#399: *209 FastCGI sent in stderr: "PHP message: PHP Fatal error:  Uncaught Exception: Invalid superglobal in /var/www/html/api/public/tryout.php:22
Stack trace:
#0 [internal function]: Phalcon\Session\Adapter->get('Phalcon\\Mvc\\Mic...')
#1 [internal function]: Phalcon\Session\Bag->initialize()
#2 [internal function]: Phalcon\Session\Bag->set('auditID', 1)
#3 /var/www/html/api/public/tryout.php(22): Phalcon\Session\Bag->__set('auditID', 1)
#4 {main}
  thrown in /var/www/html/api/public/tryout.php on line 22" while reading response header from upstream, client: 178.xxx.xxx.xx, server: mytld.com, request: "GET /tryout.php HTTP/1.1", upstream: "fastcgi://unix:/run/php/php7.0-fpm.sock:", host: "mytld.com:9005"

Provide minimal script to reproduce the issue

$app = new \Phalcon\Mvc\Micro();
$app->get(
    "/say/hello/{name}",
    function ($name) {
        echo "<h1>Hello! $name</h1>";
    }
);
$app->persistent->auditID = 1;

Details

• Phalcon version: (3.2.0)
• PHP Version: (PHP 7.0.18)
• Operating System: Debian GNU/Linux
• Installation type: Compiling from source
• Zephir version (if any): (0.9.8-6335775f25)
• Server: Nginx
• Other related info (Database, table schema): n/a

Everything working fine on 3.1.2. From 3.2.0 entire app breaks with fatal error.