Anyone else experiencing error with token refresh?

I have a google Oauth2 server, and it works well except when the token expires the GPT can’t refresh it.


I have the token refresh code in the same token endpoint, but the request for refresh doesn’t even hit it. So I can’t see what GPT sends to the endpoint because it never arrives.

It appears like the GPT doesn’t call the token endpoint when the token expires. Anyone else has this problem ?