Thank you for confirming our analysis! You’re absolutely right — the save_deferred_events() and load_deferred_events() methods are causing MySQL connection corruption during shutdown.

TESTING RESULTS
Pinterest Plugin Testing:

• Temporarily disabled Pinterest plugin → All Pinterest-related “Commands out of sync” errors stopped
• Blocked Pinterest scheduled actions → Confirmed Pinterest is the root cause
• Re-activated Pinterest → Errors returned immediately

Cascade Effect Confirmed:
After blocking Pinterest’s scheduled actions, identical “Commands out of sync” errors appeared in:

• Rank Math SEO (Notification_Center->update_storage())
• Jetpack Autoloader (cache_plugins() transient operations)

This confirms Pinterest’s database operations during shutdown are corrupting the MySQL connection, triggering a cascade of failures in other plugins.

Community Evidence:
This is not isolated — similar reports exist across the ecosystem:

• RankMath Forum: Users report identical errors with Notification_Center->update_storage()
• Reddit WooCommerce: Jetpack Autoloader producing the same “out of sync” errors
• RankMath KB: Acknowledges this as a known issue tied to shutdown hooks https://rankmath.com/kb/wordpress-database-error-commands-out-of-sync/

Status Report

https://gist.github.com/WPAccess/ca4b82a1560552d5e32feb2bb42ff385

Hi i shared the report and here is the full screenshot of the image optimization page

https://ibb.co/tQgHQgq