How do I assign a task to an AD group with SSO enabled

Prior to turning SSO on we would (See image below):

1. Create a text variable and assign Display name of AD group
2. Add a “Get members of an Azure Active Directory group” and use text variable from step 1
3. In “Assign a task to multiple users” set the Assignee to the “Stored Member emails” from step 2

Now with SSO turned on there is no way to assign to “Stored Member emails”.  I tried adding the email address of the AD group as well as assigning AD group to variable and it fails.

How do we do it now?