Restore Print a Task with Sub Task Details - this was removed with the May 2024 update

Note: Not a solution but marked as such to elevate a key reply

Until/if Asana addresses this, you may want to consider the free Asana2Go (disclaimer: I’m the creator) which offers different output formats and lets you print one or an arbitrary selection of tasks (or subtasks) and will show any and all of their subtasks titles, assignee, and due date, but just that first level of subtasks.