Insufficient Permission for Assigned Appointment's Event

[raymondliew1992]

As shown below, one of the staff, Louis was assigned with the appointment created/booked by a customer. The system automatically creates an event for the appointment. However, the assigned staff was unable to access the event despite having the permission set in Role Permission.

The user’s roles are Employee, Leave Approver, Sales User and Sales Manager.

ERPNext: v12.3.1
Frappe Framework: v12.1.0
https://discuss.erpnext.com/t/insufficient-permission-for-assigned-appointments-event/56370

[monolithonadmin]

Same issue on
ERPNext: v14.2.1 (HEAD)
Frappe Framework: v14.9.0 (HEAD)

The issue is that the event's owner is the guest. The easiest fix would be to set the agent (=user) as owner.