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Hello @klishb,
We did not make any changes to the way our caching works in the last update.
When you update a post, the cache will be automatically purged if the option Automatic Purge option is turned on in Speed Optimiser >> Caching. This option is turned on by default and purges the cache when a new post is made, or an existing one is updated.
Please see if this option is turned on for your site. If the problem persists after that, it would be better to submit a ticket to us through your User Area so we can investigate, recreate, and see what is causing this on your end.