@dcskinner No this is not intend, I just ran some tests, my host has a bond for management, which showed up in the dropdown.
Then I created a second bond, it did not show in the dropdown until I actually configure it. When creating it, it was actually created by default with "mode=none" so I went to the host's network tab, chose static and assigned an IP to it and it was then showing in the dropdown. Are you sure your bond is properly configured?