After a period of inactivity, the auth token expires, but it's still possible to navigate the UI although the website doesn't present the information (empty chart, empty values for average, median, etc). Also, in the browser console it's possible to see the following errors:

authInterceptor.ts:34 Intercepting request
keycloak.js:268 POST http://localhost:8080/auth/realms/hawkular/tokens/refresh 400 (Bad Request)
authInterceptor.ts:49 Couldn't update token

See attached screenshot for sample.

With a browser refresh, the user is redirected to the login page. Ideally, the user should be redirected to the login page when this token refresh error happens, with no need of refresh.