The Google Cloud status page had a message about some 'long-lived' OAuth tokens being invalidated on the same day that the mass logouts occurred. They took it d

The Google Cloud status page had a message about some 'long-lived' OAuth tokens being invalidated on the same day that the mass logouts occurred. They took it down quite quickly, and it doesn't appear in the incident history. FWIW, I only use Gmail via browser (with the regular web-based sign-in, not through Chrome/Chromium), and all of my sessions stayed intact.