Starting at 04:02 UTC, June 1, our operations team has seen minor instability in the Tokyo region for 1/3 of Web Isolation requests using Tokyo as their egress location for Web Isolation, resulting in several minutes of slower web browsing experience for users of the system. Traffic for that region was temporarily moved to egress via Osaka while our team investigated.
At 14:00 UTC June 2, all traffic for the Tokyo region is back to egressing to the internet from Tokyo directly. All Web Isolation functionality is operating normally.