We definitely recognize the popularity of this feature, and we discuss it constantly during the planning phases. However there are certain technical limitations in the system that add a large amount of development cost. Because of the cost and the fact that there is a workaround available, other features get prioritized over this one.
That being said, please keep voting for it. The popularity of the feature does help bring it up and makes us reconsider every time.
Apologies for the delay.
We’re doing some research both on the specifics of this ask as well as what it would take to support this.
Is the ask here to do the same thing that regular Azure AD does (see: https://blogs.technet.microsoft.com/enterprisemobility/2014/12/18/azure-active-directory-now-with-group-claims-and-application-roles/) or is are there different requirements around this for Azure AD B2C?Mats Alm commented
We are evaluating a CIAM solution for my customer, the process involves implementing a few basic features on the free tier of each option. Configuring and consuming group claims via OICD is one of them. In this case it should work with both asp.net core and nodejs apps.
Considering how easy this is solved with the other alternatives, the lack of this feature is most likely something that will make us pick another solution.