Admin user cannot save changes to their own profile when using "Users & Rights/Users"

As an administrator user, I am trying to modify my own profile, as following:

• I log into my account
• I access "Administer Wiki".
• I access "Users & Rights" -> Users
• I click on the pencil icon for my own user.
• I make new alterations to my Personal Information profile, and hit the "Save" button.
• When I check the content of my profile, the new modifications are not found.

However, if I make the modifications to my own profile via XWiki/admin (accessing it by clicking on my profile picture), the new modifications are correctly saved and visible later on.

I have also tested editing the profile of a different user (admin and non-admin) from Users & Rights -> Users, and their modifications are also being correctly saved.