Node Update not showing to anonymous user even after clear cache
You have set the value of Expiration of cached pages to 1 hour

Expiration of cached pages tells the External Caches for how long they can server the old version of a page. 

In your case browser is the External Cache and it assumes that it can show old content for an hour. So it doesn't even make a call to you website when you request the page.

You can see the changes after an hour or clear all your browser caches to see the new changes.

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