Why can't I edit the reporter on epics?

Question

I am both an administrator and member of a group which has "modify reporter" permissions for the project. I can modify the reporter on bugs and improvements, but not epics. According to the "Permission Helper" I have permission, but the field is not editable when I open any epic. Any ideas on why this is?

Nate Dudenhoeffer · Accepted Answer

It started working later. Apparently there must be some caching involved after altering settings.