Thanks for looking into it.
I just tested again with chart suitecrm-7.2.2 and tag 7.11.8. But unfortunately I am hitting the same issue.
Enabled SAML, added the values, save them. Even logout and log back in and they are still uncheked.
helm list | grep -i suitecrm
suitecrm 1 Tue Sep 10 12:22:07 2019 DEPLOYED suitecrm-7.2.2 7.11.8 default
Should I test enabling the SAML configuration manually again in config_override.php and see if the other issue with blank screen is giving the same errors ?