This is related to the bastion change here http://projects.theforeman.org/issues/13116 Katello has to be refactored to use the GlobalNotification service.
Created from redmine issue http://projects.theforeman.org/issues/13207
To verify, Make sure that the top level notifications (in the top of the page, not in a details page) are working fine. so adding removing Products, Sync Plans, etc. will display the correct notifications.
Verified in Satellite 6.2-beta-snap-6.1 The notifications for product delete, sync plan delete and repository creation are all shown properly.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2016:1501