Currently, when adding a new 'Jira issues' macro inside the body of a content macro, it's rendered and displayed only as a link and do not show as a table of the Jira issues.

Having this feature would assist a lot of app developers with their macros. 

Related changelog: https://developer.atlassian.com/cloud/confluence/changelog/#CHANGE-1147. The changelog also mentions a workaround: Customers who need to insert Jira issues into vendor macros will still be able to use “Jira Legacy” to do so.