User email showing in suggestions section with visibility set to hidden

panel:bgColor=e7f4fa NOTE: This bug report is for JIRA Server. Using JIRA Cloud? See the corresponding bug report|http://jira.atlassian.com/browse/JRACLOUD-29690. panel Assignee user-picker shows user email in Suggestions section, with User Email Visibility set to hidden. Steps to reproduce: Emai...