Changes for parameters in inventory view are sometimes not considered

Current Situation

When changing parameters for jobs or orders the changes are not considered when reopening the parameter view.

• open a job or order
• open the paramter view
• add or change a parameter
• close the parameter view
• open the parameter view again (without this step, the changes will be considered)
  • the changes are still there
• click somewhere in the tree
• open the job again
• open the parameter view
• the changes are no longer there

Desired Behavior

Changes for parameters should always be considered even when reopening the parameter view.