I remember someone reporting a similar issue last year or so. They used a theme which was not updated with the current BP version at that time. What have you done so far to troubleshoot the issue?
WP/BP versions? Theme used? If you change to the Twenty Fifteen theme, does the issue remain or is it resolved? Have you tried deactivating plugins except BP and use WP default theme to check if that resolves the issue? If that doesn’t solve it, do provide more information about your installation https://buddypress.org/support/topic/when-asking-for-support-2/
This is a theme I have hand built, so there may be something that I don’t have correct.
I am using WordPress: 4.3.1 and BuddyPress 2.4.0
I have gone through and tried deactivating plugins and still no luck. All plugins are up-to-date. Problem seemed to occur when i would create a new field group and delete it. It almost seems like if I had a field then deleted it, it would show up again but as the Name field which is not deletable.
FIX FOUND: To fix this issue, I had to rebuild the user database and re-import all users
