Currently, next-gen boards can't show sub-task issue types in the same manner it can other issue types, like bug, tasks, etc. Atlassian recommend to use Company-Managed Projects if this is an absolute must for you.
For more details refer following link: https://jira.atlassian.com/browse/JSWCLOUD-18064
Also, if you feel my input help you please accept the answer.
Regards,
Bhushan
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.