We're encountering an odd issue where no one can edit the reporter on this Issue. It just pops up a tooltip box "Reporter can't be edited". I have confirmed the permissions for "Modify Reporter":
The user requesting this change is in Engineering.Sec. I am in jira-administrators, and so our my fellow Jira Admins and none of us can change it either. We can't change the reporter for any Issues within this Project. I've searched through other posts in this board and around the web and nothing has come up that's been able to help, so I'm hoping its just a slightly more unusual issue that someone else has encountered.