Kibana login (Openid/Azure AD) is not working after upgrading to 1.10.1 from 1.8

I have opendistro 1.8 and Elasticsearch/kibana is configured to use openid/Azure AD for authentication. It is working well.
I have performed the upgrade to 1.10.1. Cluster is green but kibana authentication is failing:

{"statusCode":400,"error":"Bad Request","message":"[request query.session_state]: definition for this key is missing"}

Did something change in 1.10.1 and was not documented in the upgrade steps?

Hi @sushovan,

Sorry for the issues faced by upgrading the ODFE to v1.10.1. We have added the instructions to address this. Please check
Please let us know if you continue to face the issue.

update here - has resolved the issue. waiting for official release