Plan should use Issue Resolution rather than Issue Status Category to determine when to remove issues

Problem definition

Currently issues are removed from a plan if they are in a Status of Done Category (Green).

Exception: Issues that have Sub Tasks that are not in the Done category will continue to display in the Plan until all Sub Tasks are in the Done category as well. 

Suggested solution

Issue Resolution should be used to determine whether issues are to be removed instead of Status.

Why this is important

If issues are in a Green status but not resolved, they won't show up in the plan unexpectedly.

Workaround

In version 2.22+, enable this dark feature:

com.atlassian.portfolio.issueloading.includeUnresolvedCompleted

by adding it from <JIRA_BaseURL>/secure/SiteDarkFeatures!default.jspa