In Jira cloud - We see 'Story Points' twice in the custom field and also on the issue view screen.
However - in the new view (I really don't like the new jira issue view), adding values to both the Story point field and then moving to old view does show only 1 story point. Now, the question is: How Story points custom fields are getting created (did trashed one few days back) and again a new one is poped again.