My manager has two non-professional subordinates, of which I am one. Procedural/workflow decisions that affect me are made with the other subordinate being part of the decision making process and, perhaps instigating the change initially. The subordinate then relays the changes to me as if she's the manager and without making reference that this change is the manager's decision or how it was arrived at.
Frequently, I am not told about these changes until a problem occurs. The manager addresses the problem with me and does so in public.
While I realize a manager can choose to delegate responsibility to any of his subordinates, is it proper for one subordinate to consistently be designated over the other?