XF 1.3 Ability For Certain Usergroups To Change Prefixes


Well-known member
They are but they still can't change them.
If they have "Edit Thread Title by self" and "Edit post by self" then users can definitely change the prefix from Thread Tools > Edit Title at the top right of the thread they started. Of course they must be within the time limit set for editing a post (make sure it's not set to 0 as they can never edit) to change the prefix.

If your users still can't do this then you'll need to analyse permissions for a user to see where the problem is.