3351801 - Why is the SYSTEM user not deactivated after exceeding maximum_unused_productive_password_lifetime?

You want to block the logon of the SYSTEM user if it has not been used for a certain number of days to prevent any potential misuse from a security perspective. 
Despite configuring the password policy maximum_unused_productive_password_lifetime=nfor the SYSTEM user, the SYSTEM user is not deactivated after n days.
While the other database users are deactivated after exceeding the defined time period formaximum_unused_productive_password_lifetime.

SAP HANA, platform edition 2.0

HANA, user, password policy, maximum_unused_productive_password_lifetime, deactivate, is_password_lifetime_check_enabled , KBA , HAN-DB-SEC , SAP HANA Security & User Management , Problem