Testing Joomla 4 on a XAMPP installation offline. Everything seems to work with two exceptions (I'll cover the second issue in another post later, if I can't get it fixed): when a SuperUser (or Moderator) logs in and tries to edit another user's profile by clicking on "Update User Profile", it always goes to the profile of the person that is logged in. In other words, no one can edit anyone's profile other than their own.

I've done the conversion to Joomla 4 many times on the development server until it goes very smoothly using Akeeba Backup (disabling or uninstalling incompatible extensions, dropping the database and recreating/restoring); however, this issue has recurred from the beginning with the earliest Joomla 4 stable release and continues to the present on Joomla 4.1.2. No permissions or any other such changes have been made.

Unfortunately, I cannot give you login credentials on the offline server. Any ideas?

"Moderators View Access Level" was set to Special, with Special defined as Moderators, Administrators, Publishers, and Super Users. "Allow Moderators to Edit User Profiles" was set to Moderators and Super Administrators.

Since that didn't work, I changed the "View Access Level" to Super Users and "Allow Moderators to Edit Profiles" to Super Administrators Only. That didn't change anything. A Super User still can't edit someone else's profile.

One strange thing: when I click on Update User Profile in a User's profile, the URL displayed in the address line is the correct one for that user's profile; however, the profile displayed is the one of the person that is logged in, and the browser title for the page (and on the page itself) is "Edit Your Details" instead of "Edit <user's> Details". In addition, the warning at the top that is supposed to say "WARNING: This is not your profile. As a Moderator you are editing the profile of user: <username>" is not displayed.

To backtrack: I took a properly operating website (where Super Users and Moderators could edit anyone's profile) under Joomla 3.10.8 and upgraded that to Joomla 4.1.2 with no changes to CB. With that upgrade, the ability to edit other user's profiles, other than the person that is logged in, is no longer is allowed.

Sure hope you have some more ideas on what can be wrong. Thanks.

No, I don't believe we can say that there is autofill of form fields. The reason is that the page title is "Edit Your Details" indicating that the browser page being displayed is being intentionally created from the logged in user's profile. And the WARNING is not there, as well. So, the browser doesn't think it's on the page that matches the URL with form fields filled in automatically; it thinks it's on the profile of the logged in user (Super User).

When we just view a user's profile, the URL is displayed as: .../artist-profiles/###-<username> (we have a main menu item called "artist-profiles"). [### represents user ID]

When we click on Update User Profile, the URL is displayed as: .../cb-profile-edit/userdetails/###-<username>, but the profile being displayed is that of the logged in Super User, not the correct one that corresponds to the ID and username. And it is titled "Edit Your Details".

If we go to our own profile intentionally while logged in, the URL is displayed as: .../cb-profile-edit/userdetails (without any further identifying information like ID or username). The page is titled "Edit Your Details".

The only other thing of note is that, on the Joomla 3 live site, we do use an Extension called ProfileURL, which provides a shorter URL for profiles (such as <site>/<username of choice>). That Extension has not been updated to Joomla 4 compatibility so, at present, our Joomla 4 test installation has that Extension (all 5 elements) all disabled.