Akeeba Backup has overridden Joomla!'s extensions installer with its own version. Akeeba Backup's version allows you to take automatic System Restore Points when upgrading/updating extensions which can be used to roll back the extension to its previous version should the upgrade break it. You can temporarily switch off this feature by clicking on the "Back to standard installer" link. If you need to permanently turn off this feature, please disable the "System - System Restore Points" plugin.
I find that I get restore points when I update Akeeba Backup, and Akeeba Admin Tools, but not anything else - including updating the Joomla version.
Are my expectations wrong, or do I have a problem? So far as I can tell, I have not deliberately disabled anything.