After installation some application from Application Catalog its default permissions become incorrect.
The behavior was considered as internal software issues with id PPA-2710 and PPA-3374 and will be fixed in future PA updates.
Unzip the archive and replace two files:
/usr/local/psa/admin/plib/Apspp/Backend/Adapter.php - only on PA Management node.
/usr/local/psa/admin/sbin/sappmng - on PA Management node and all Apache Service nodes.
sappmng file should be installed on corresponding operating system only.