Currently, the option to search for issues associated with an Epic is not available for next-gen.
We have a feature request suggesting the implementation for this ability which is on the status "Awaiting Development":
Please, click on vote and watch to receive updates about the feature.
Hi! My name is Eoin and I'm a product manager working on Team-managed projects in Jira Software Cloud. We're continuously improving and updating Jira Software and feedback from our customers is ...
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