The context-tips removal is the largest behavioral change in this release. If you relied on proactive tips appearing during conversations to discover features, those will no longer show. The feature infrastructure (tip catalog, classifier prompt) has been fully removed rather than just disabled.

The Windows sandbox (/sandbox install) requires administrator rights for the one-time setup. If your machine is managed and the elevation prompt doesn't appear or is blocked, contact your administrator and point them to https://code.claude.com/docs/en/sandboxing.