Adding PIM enabled security group to an Access Package

Hi,

Recently a new feature has gone in preview, it's now possible to add PIM enabled security group to an access package.

explained here: 

https://learn.microsoft.com/en-us/entra/id-governance/entitlement-management-access-package-eligible

I followed the instruction exactly on 2 different tenants, one tenant has Entra ID Governance licence, another has the Entra Suite licence. 
The result on both tenants was the same. 

When adding a PIM enabled group to an access package.
I am presented only with 2 roles (member or owner) and not with the expected 4 roles. (member, owner, eligible member, eligible owner).
The group I add is created for test purpose couple of weeks ago, and really is PIM enabled (discovered ).

Is this a preview that has to be activated on a tenant?
(its not in the "Entra -> Identity -> settings -> Preview features" list).

Am i missing something?

Cheers!