I recently upgrading my wordpress instance from 3.5.1 to 3.8, and upgraded W3TC to 0.9.3. Since then, I've noticed updating WP Pages doesn't flush the Page Cache. I'm using Memcache as the backend, but also tested APC and File. All show the same problem.
How I test:
- Update the content of a page via Wordpress
- Access page URL through "Wordpress Address": the updated content is visible
- Access page URL through "Site Address": the update is not reflected
- Empty Page Cache
- Access page URL through "Site Address": the updated content is now visible
If this is not a known issue, can someone provide debugging tips? I'm curious to know if the relevant W3TC functions are being called on WP's "save_page" action.
Is it possible the automatic update process left behind some old incompatible code/settings? I've tried restoring W3TC to defaults and reinstalling. It might have helped on a dev server, but not production. Inconclusive.