```release-note:bug
core/expiration: Ensure leases are not inadvertently cached on standby nodes.
```
```release-note:bug
auth/token: Ensure salt cache is invalidated properly on standby nodes.
```
```release-note:change
core: Restart standby on unknown `sys/` key to invalidate; please report if you see a log line with `no mechanism to invalidate cache`.
```
