Coming to a non-logged in Management Console Can still see MC -- needs hard refresh to fix

[galenatjpl]

Navigating to a Management Console link after a long time of not visiting the MC, results in seeing the MC page, but some elements don't load properly. Doing a hard refresh on the web page then brings up the Cognito login page, and after login everything works.
This may be an issue with the proxy and/or proxy caching.

This may be related to an "expire" token? Results might be old. One approach is to redirect user upon an expired webpage. Or another approach might be to use the refresh token to get a new token.