When using the group by subtasks in a next-gen board, stories with subtasks no longer show their column status nor ID #

Description

When using a Kanban or Scrum board in a next-gen project, grouping issues by subtask don't display their status or ID number. This is a feature present only in classic projects.

Steps to reproduce

1. Create a next-gen project (Kanban or Scrum board);
2. Create stories or task with sub-tasks;
3. On the board, group issues by sub-tasks;

Results

• Actual
  This is how it's at the moment:
  

• Expected
  This it's how it should be in the future:
  

Workaround

Currently, there's no workaround.