I am trying to use Plans for Capacity management on my team, where I am grouping by Assignee. Ideally I would like to see who has/does not have work scheduled with all Assignees rolled up/collapsed. I can see their work blocks when expanded, but I see nothing when collapsed. Here are some screenshots and my view settings:
You can see I have a block of work planned for this person

But when it's collapsed no work shows on the calendar.
