Steps to reproduce:
1. Create a non-admin user and assign all UI roles to the user
2. Login as the user and create an event with the following ACL:
When opening event-details of the event in the Access-Tab, the user cannot create or delete ACL entries. It is also impossible to change the role of an ACL entry, The respective UI elements are missing or greyed out (see screen1.png). This happens whether the event is assigned to a series or not.
The user can create/delete/change ACL entries provided they have write access to the event.
Workaround (if any):
Assigning ROLE_ADMIN to the user (not really an option in most cases)