No order will be executed before idle_timeout is reached when job chain has a process class

Current Situation

Preconditions:

• a universal agent process class is assigned to a job chain
• the job chain contains a job "simple_job" that have a "simple" process class to let this job run on the master
• many orders are running in paralell in the job chain

Effect:
When an order reaches simple_job and the task has ended processing of the order the next order will be executed when the idle timeout is reached.

Desired Behavior

On the given pre conditions the next order should immediately be startet when the task has ended processing of the order

Workaround

Assign the universal process class to the job directly instead of assigning it to the job chain.