Per the documentation, we were expecting to see unavailability listed per employee in the Team Schedule when doing shift planning. Instead, everyone is lumped into the "Unavailable" assignee. Visually, when planning a schedule, not seeing if a person is marked as unavailable easily is not ideal.

Refer to this help doc page in the section "How approved time off appears on the Shift Schedule" -

It clearly shows it working this way in an older version of the software.