- Plesk 12.5 for Linux
When PHP version and handler management is unchecked in Home > Service plans > %serviceplan% > Permissions tab Customers are still able to modify handlers and their versions in hosting settings of corresponding subscriptions.
This issue has been considered as a software issue #PPPM-4418 and will be fixed in future product updates.
Please use provided ID to track maintenance in Plesk release notes .
No resolution is available as of right now. The issue will be fixed in future Plesk releases.