net/http: TLS handshake timeout was reported when create oidc connector

[hopeshared-lee]

Hi, we are using DEX v2.25. And we have another production Auth Server which will be connected as oidc connector. On one of the machines where DEX is installed and configured, it is always failed to connect IP. The error says
failed to initialize server: server: Failed to open connector oidcconn: failed to open connector: failed to create connector oidcconn: failed to get provider: Get [https://idpserver/.well-known/openid-configuration]: net/http: TLS handshake timeout

Other deployments are working well. I can't find much useful information. But I see #1632 is related with TLS handshake. Is there any known issue in this area if OIDC connector requires TLS? What additional steps will be needed if upgrade to v2.36?

Thanks!