The Jira admin helper can help you figure out why you can't see a custom field on one of your issue screens. To use the Jira admin helper, follow these steps: 

  1. Navigate to the View Issue, Edit Issue or Create Issue screen where the field is not showing.
  2. If you are viewing an issue, click More Actions > Where is my field? If you are creating or editing an issue, click Configure Fields > Where is my field?
  3. Enter the name of the field.
  4. Click Submit.