JOC Cockpit throws an exception on using äöüÄÖÜ as job parameter value

Current Situation

When character äöüÄÖÜ is used as a value for job parameter from the JOC-Cockpit. The error message occurred:

Server returned HTTP response code: 400 for URL: http://host:40444/jobscheduler/master/api/command

How to Reproduce

• Login to the JOC-Cockpit.
• Click on Jobs tabs view.
• Start any standalone job using the option "Start Task Parameterized" from the action menu of a job.
• Add a new parameter with name "A" and value "äöü".
• Submit the task.
• The JOC-Cockpit throws the above mention exception.

Desired Behavior

It should be possible to handle the job parameter with äöüÄÖÜ as a value from the JOC Cockpit.