Brian,
No, unfortunately, that issue is not yet resolved for us. Whether the portal group is requested directly or part of a role mapping request for ABAP roles with the portal group mapped, multi users are not provisioned. We are going live this weekend, so in recent weeks have been avoiding putting in any more corrections than absolutely necessary. I plan to open an Incident with SAP as soon as things settle down after the go live.
Cheers,
Gretchen