I'm experimenting with creating some jira custom fields using Connect Apps using the provided module here:
https://developer.atlassian.com/cloud/jira/platform/modules/issue-field/
The custom fields can be added from the screen settings for an issue fairly easily, but there doesn't appear to be a way to add these fields to next-gen projects.
Presumably, the issue is related to the fact that screens and fields are managed entirely within the scope of a next-gen project, so they don't have access to custom fields defined outside the scope.
Is there a way to add custom fields defined in an atlassian connect app to a next-gen project?