Hi,

Please see screenshot here as requested: https://snipboard.io/lqXZLf.jpg

Noted. How would you suggest I exclude the core plugin js files from being minified? When I inspect the page I see only yith-wcan-shortcodes.min.js being used, so I added this: /wp-content/plugins/yith-woocommerce-ajax-product-filter-premium/assets/js/yith-wcan-shortcodes.min.js to Never minify the following JS files, but this did not solve the issue.
The issue is intermittent and only happens after an unknown period of time, so I am unable to test it that way. But I am positive it is cache related as it goes away immediately after I clear the cache or add a ?(query string) to the url e.g. https://www.welding-alloys.com/application/hardfacing-welding-consumables/?123.
When the issue occurs, the filter on the left hand side of the page is completely blank. On inspection, I see the html is not rendered at all and there are no js errors on the page.

Please let me know if you have any suggestions? For now I will exclude all the js files in the plugin folder from being minified and I also added the below to purge the cache automatically every hour.

// Flush W3TC Cache Automatically hourly
function ql_flush_w3tc_cache() {
$w3_plugin_totalcache->flush_all();
}

// Schedule Cache Clearing Process
function ql_flush_cache_event() {
if ( ! wp_next_scheduled( ‘ql_flush_cache_event’ ) ) {
wp_schedule_event( current_time( ‘timestamp’ ), 3600, ‘ql_flush_w3tc_cache’ );
}
}
add_action( ‘wp’, ‘ql_flush_cache_event’ );