The problem stems from a recent update where we modified the update rules for the OAuth connector. Our goal was to implement a more proactive refresh mechanism to ensure a valid token is available whenever the system runs.
However, this new refresh rule introduced a bug specifically related to the Google OAuth refresh process. Because this issue was difficult to replicate within our automated checking procedures, it was unfortunately deployed to the live environment.
To prevent this from happening again, we are currently working on implementing automated validation for the OAuth connector workflow to ensure these types of issues are caught before release.