Steps to reproduce the issue

Enter Joomla 3.5.1 backend "Global Configuration -> System -> Session Settings", choose "xcache" for Session Handler.

Expected result

I can login in and logout as usually and more faster.

Actual result

I can login in Joomla backend, but when click on any link or menu, I will be force logout .

System information (as much as possible)

Joomla 3.5.1

# php56 -v
PHP 5.6.21 (cli) (built: Apr 28 2016 07:07:46)
Copyright (c) 1997-2016 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies
    with XCache v3.2.0, Copyright (c) 2005-2014, by mOo
    with XCache Optimizer v3.2.0, Copyright (c) 2005-2014, by mOo
    with XCache Cacher v3.2.0, Copyright (c) 2005-2014, by mOo
    with XCache Coverager v3.2.0, Copyright (c) 2005-2014, by mOo

Additional comments

I had already copied xcache.ini content to php.ini of php56.