We’ve seen similar behavior.
It’s happened to us once before and is currently happening. When we deploy new code (unrelated to OAuth) to multiple AWS instances, it suddenly stops working. This is for both new authenticate requests and API connections with previously acquired access tokens.
Several weeks ago this happened on a deploy. A few days later it magically started working again with no code changes.
It has only affects a single deployment lane (i.e. works in dev, stage, but not in prod).
Our first thought was system times. That doesn’t appear to be the case.
Any one have any ideas?
Thanks in advance for your help!