Browser Access re-authentication with dynamic web pages

We are having issues with accessing, via ZPA Browser Access, web pages that are dynamically updated from the client side after the authentication timeout has been reached. In particular this is with SAP Fiori based applications.

When the authentication session is reached you can see that the ZPA/IdP process takes place in the background but the application itself has already errored.

Has anyone had any luck presenting web applications like this through BA (without setting never ending authentication sessions!)?