Problem: 

Removing system fields such as affected/fixed version in the view issue screen does not take affect. The only method to remove those field right now is by hiding it in the field configuration, which is inconvient as it might be required for some workflow steps.

More Details: https://jira.atlassian.com/browse/JRASERVER-20138

Solution:

  1. Install IssueLayout.
  2. Create a new Layout
  3. Replace the System default Details Panel with IssueLayout Details Panel