UPDATE: the question is redundant as AutoUser creation doesn't work with AD-SSO...
With older versions of the UTM, when the AD-SSO was used and you had selected the option under Authentication Services > Auto Create users and selected Web Filter. The UTM would build user objects as each web filter request was sucessfully authenticated to a user.
This does not work anymore. For each user that is sucessfully authenticated, a user object is not built.
I'm unsure if this is now by design (unlikely) or a possible bug.
Can anyone replicate please?