Hi David,
It can, the issue is without AP Aware (Auth-Override) and you have a bridge@AP topology, any authentication taking place on the AP will also get authenticated again on the switch port.
Had another good look around, but not got much further.
Not sure if the answer is within this command:
configure netlogin ports [all | port_list] [allowed-users allowed_users | authentication mode [optional | required] | trap [all-traps | no-traps |[{success} {failed} {terminated} {max-reached}]]]
Where possibly you can set the allowed-users to 1? Not sure if that will be the AP itself, which is all you really want.
Maybe worth a go, and look at the netlogin sessions to see if it is as expected?