I was just checking out Wordfence as I had received the failed login report that there had been login attempts on my username. It was then that I noticed that all 3 other users have the same username shown when I look on the edit page for that user. I thought this was impossible and certainly don’t remember doing it. The field is marked “Usernames cannot be changed”.
I assume that I have missed something. On the All Users page, it shows my username as I would expect, and also the username I would expect for the other users. By that I mean that in the username column on the Users page, next to my account icon is the username that I expect to see. Next to their names is also the username I would expect to see for them, which in each case is their first name. However, when I go into their edit page, it shows the same username as mine in the username field. Am I misunderstanding the purpose of this field?
I am no expert, but I have had a WP site for at least 15 years and I have never noticed this. I have 2FA activated for the two admin accounts. The other two have no role allocated, but it is convenient to leave them in place.