Ms auth integration stop working upgrading to 4.2.13

Hi team,
we are using an application built on Django 3.2.16 that is integrated with azure AD using this package: ms-identity-python-samples-common/ms_identity_web at main · Azure-Samples/ms-identity-python-samples-common · GitHub . After upgrading to 4.2.13 we are having issues with authentication.
ms_identity_web is still working fine, it is able to negotiate and decrypt token and extraction email, but on Django side we note that request.,user is always set to unauthenticated user Any hints? Not clear when using and external auth package who is setting request.user to authenticated.

Thanks in advance or your help