Xinetd ftp issue after update 89 [Plesk 17.8.11]

Hi All,

After upgrade #89 I have some issue with ftp access. (Plesk 17.8.11 #89, CentoOs 7 X64)

I need to restart xinetd service in order to connect via ftp to my domains after 2/3 hours of activities.

I have inspected this issue I believe there is an ssl issue.
The problem seems to be:
PAM unable to dlopen(/usr/lib64/security/pam_stack.so): /usr/lib64/security/pam_stack.so: cannot open shared

service xinetd status

Redirecting to /bin/systemctl status xinetd.service
● xinetd.service -...

Xinetd ftp issue after update 89 [Plesk 17.8.11]