next-gen JQL "parentEpic" returns wrong results

[Jason Tolotta]

parentEpic() on Advanced search reference - JQL functions 

The next-gen project contains Epics with child issues with Stories and Tasks and are in-turn linked to Sub-Tasks.
Originally, the JQL filter "parentEpic" was used to retrieve all issues and Sub-Tasks.
All it does now is return the Epic.

parentEpic = ABC-123

Up-vote the following issue to bring the functionality back:
https://jira.atlassian.com/browse/JSWCLOUD-18489

[Jason Tolotta · Accepted solution]

SOLUTION: Up-vote the following issue to bring the functionality back:
https://jira.atlassian.com/browse/JSWCLOUD-18489

[Ollie Guan]

Hi @Jason Tolotta ,

Epic in JQL does not work with Next-gen projects.

https://jira.atlassian.com/browse/JSWCLOUD-18489

https://community.atlassian.com/t5/Jira-questions/next-gen-project-JQL-filter-epic-and-related-issues/qaq-p/1088181