After updating to the latest version of Akeeba Backup (3.11.2), its backend menu item disappeared.
When I go to Components, there is no longer a link to Akeeba Backup. Admin Tools and all the other are stil there though.
Also I found out, that many of the items in backend menu are not working at all. For example Articles -> Articles does nothing when clicked. Also when I click on "System" and choose any of the item below, whole "system" menu item dissapears until the new page is loaded.
None of the above happend before updating Akeeba Backup.