Web Server page hangs after inactivity time

[sergidxb]

Hello, i'm using moh_auth_openidc on top of apache to act as a reverse proxy and pass on HTTP header information to a web application after authentication with OIDC. The problem that i have as as follows:

1- user logs in to the protected web site, gets redirected to iDP and is authorized, user is granted access.
2- user is able to browse different page and tabs on the protected web site
3- user leaves the browser session open for aprox 15 minutes and then tries to resume work
4- the web page will go to hanging sate and nothing will load
5- user will have to press refresh on the browser to re-authenticate with the iDP and be able to resume work on the application

Any idea what could be wrong if you had similar experience in the past?