When proxy in as manager of an employee (with proxy access in RBP), the manager cannot view retrospective leave in Team Absence Calendar.
Employee Central: Time Off
It's a configuration issue.
Enable the following checkboxes under Admin Center -> Proxy Management.
Employee Central V2 + Employee Profile
Private Data For Proxy Account Holder
ECT-85888, proxy, supervisor , KBA , LOD-SF-EC-TIM , Time-Off , Problem