Nanoflow signin issue - anonymous user prevents access to page.

I am using the “Nanoflow Commons” module and calling the “SignIn” Java action to do a custom sign-in of an anonymous user.  This works; however, as soon as I switched to prod security mode and set up entity role security, my landing page that has a DataGrid on it causes an error.  I know the error means the Anonymous user does not have access to an entity (Which it shouldn’t), but I was expecting that access would be checked at the point the “Show Page” action was triggered. Is there no way to indicate that User is now logged in and the role may be different?