Updated user password cannot use immediately

Hi forum,

After I changed password in Pentaho Admin Console and login with this new password to Pentaho User Console, password does not match error is raised and when I use old password, login is successful.

But, after I changed password and restart the BI server, new pasword can be used.

Is that bug??

Or

Do I need some setting to be able to use changed password without restarting the BI server??