Once a user filled out the field shown as "Your profile" on the edit page and "About" on the profile this cannot be undone. The text can be changed but when sending an empty text the old text is just kept. The profile edit page doesn't even show that the old text was not deleted.
Once a user filled out the field shown as "Your profile" on the edit page and "About" on the profile this cannot be undone. The text can be changed but when sending an empty text the old text is just kept. The profile edit page doesn't even show that the old text was not deleted.