bug or feature? php cron for customers without ssh

[ESTUGO]

Hi there,

my system: OS: ‪CentOS Linux 7.2.1511 (Core)‬, Plesk Version 12.5.30 Update #23

I have a strange event with a php-cronjob for customers.
Access to the server over SSH: forbidden
Scheduler management in hosting subscription: enable

Now my problem: We have a customer with a scheduled PHP script.

Under Subscriptions -> Scheduled Tasks, is the button "Run now". This button says:
-: /usr/local/php55-cgi/bin/php: No such file or directory
-> Everything version, also "php by vendor", has the problem.
-> See attached screenshot "php-cron-with-error.jpg"

Under Subscriptions -> Scheduled Tasks -> command, and then the button "Run now", the cronjob will finished, it says: Task "httpdocs/shopware/bin/console" successfully completed in 221 seconds.
-> See attached screenshot "php-cron-WITHOUT-error.jpg"

Has anyone any idea? Why shows "the same button" a different message?

 

[ESTUGO]

Has nobody a idea? Is it a broken feature or a bug?