WordPress updates can appear stuck—and key elements such as menus or forms can fail for logged-out visitors—when multiple cache layers overlap or JavaScript optimization modifies a required third-party script. In this case, WP Rocket page caching was running alongside WP Cloud Edge Cache and object caching, while WP Rocket JavaScript minification prevented a donation form from loading in an incognito browser. Disabling duplicate page caching, enabling automatic purges, and excluding the form script restored immediate updates and reliable frontend behavior.
Issue background
A WordPress site was approaching launch, but routine edits were taking an unusually long time to appear publicly. The navigation menu and a donation form also appeared broken or unresponsive under certain conditions.
The site used several performance layers:
- WP Cloud Edge Cache
- WP Cloud object cache
- WP Rocket
Each tool can improve performance, but overlapping page-cache systems can serve stale content and make troubleshooting difficult. Optimization settings can also affect scripts that power embedded forms and other interactive components.
Diagnosis
The WP Cloud object cache and Edge Cache were active and healthy. However, their automatic purge settings were disabled, which meant cached versions could remain in place after page, post, theme, plugin, or WooCommerce changes.
WP Rocket was also active, and its page-cache disable helper was not enabled. This created the potential for two separate systems to generate and serve page cache files.
After the main cache configuration was corrected, one issue remained: the donation form did not load for logged-out or incognito visitors. The form script was being processed by WP Rocket’s JavaScript minification, which prevented it from executing correctly.
Resolution steps
- Inventory every caching layer. Check the host, CDN, object cache, WordPress cache plugins, optimization plugins, and any theme-level performance settings. Document which layer handles page caching, object caching, asset optimization, and edge delivery.
- Choose one page-cache owner. Avoid letting WP Rocket and the hosting platform both generate full-page cache. In this case, WP Cloud handled page delivery while WP Rocket retained its other optimization features.
- Disable WP Rocket page caching. Enable the WP Rocket page-cache disable helper so the plugin does not create duplicate page cache files. Leave only the optimization features that have been tested with the site.
- Enable automatic WP Cloud purges. Configure cache purging for page and post edits, plugin and theme updates, deletes, comments, single-page flushes, and WooCommerce product changes.
- Purge existing caches. Clear WP Cloud Edge Cache, object cache, WP Rocket cache, and any CDN or browser cache that may still contain stale output.
- Test content changes as a public visitor. Edit a controlled page or post, then verify the change while logged out and in a private browser window. Revert the test after confirming that updates appear immediately.
- Test interactive elements separately. Check navigation, forms, checkout elements, popups, maps, and embedded third-party tools. A page can render correctly while a script-powered component remains broken.
- Inspect browser developer tools. Review the Console and Network panels for missing files, JavaScript errors, blocked requests, or optimized scripts that fail to initialize.
- Exclude incompatible scripts from WP Rocket. Add the affected form script to the JavaScript minification or optimization exclusion list. Use the narrowest matching path or identifier possible.
- Clear caches again. Purge all cache layers after changing asset-optimization rules so visitors receive newly generated JavaScript files.
- Retest logged-in and logged-out states. Confirm that content updates, menus, and forms work in normal, incognito, desktop, and mobile sessions.
When a WordPress site is close to launch, test caching with the same conditions real visitors will use. Administrators often bypass cache while logged in, so a page can appear correct in the dashboard session but remain stale or broken for the public.
Final outcome
After duplicate page caching was disabled and WP Cloud automatic purge settings were enabled, page and post updates appeared immediately for logged-out visitors. The Edge Cache and object cache continued to provide performance benefits without trapping outdated content.
Excluding the donation form script from WP Rocket JavaScript minification restored the form in incognito sessions. The navigation, content updates, and interactive form all worked correctly before launch.
The key lesson is that caching and optimization should be treated as separate systems. Use one primary page-cache layer, configure automatic purging, and test JavaScript optimization against every critical interactive component.
For help troubleshooting WP Rocket, WP Cloud caching, stale WordPress content, or scripts that fail after optimization, contact Freshy.
