Show Create Child Issue Option in Issue View for Custom Issue Types in the Hierarchy

Problem Definition

It is not currently possible to create child issues from within the issue view for issue types that are created and configured as additional levels of hierarchy. The default Epic, Story, Task, and Sub-task issue types support this but custom issue types in the hierarchy do not.

Suggested Solution

Allow child issue creation from the issue view for custom issue types in the current hierarchy.

Workaround

Create the child issues manually and then link them to the desired parent via setting the Parent Link field or by dragging the issues underneath the desired parent in the plan view and then saving the changes to Jira.