I have locations/organizations enabled.

Let's say I create a host_group, foo. I don't add it to any location/organization. Then I add a child host_group, foo/bar. I add foo/bar to a location/organization.

When I create a new host, select its location/organization (same as foo/bar) and then set the host_group to be foo/bar and submit. Then I go back and try to edit the host, and it loads a page that says 'Host Not Found'.