LiteSpeed Cache - Categories are not synchronised to translated posts

Overview of the issue

If you are using LiteSpeed Cache plugin, you may encounter an issue translating posts. Specifically, when users create and translate a new post, the translated post does not retain the category from the original post.

Workaround

Option 1

• Go to Litespeed cache > Cache > Purge > Auto Purge Rules For Publish/Update page.
• Disable the Term archive (include category, tag, and tax) option.

Or:

Option 2

Please, make sure of having a full backup of your site before proceeding.

• Open …/wp-content/plugins/litespeed-cache/src/purge.cls.php file
• Look for line 1172.
• Change:

  				$terms = get_the_terms($post_id, $tax);
  

• For

  				// WPML Workaround for compsupp-6805
  				$terms = '';
  
  				if( class_exists('SitePress') ){
  					$default_language = apply_filters('wpml_default_language', NULL );
  					$current_language = apply_filters('wpml_current_language', NULL );
  					
  					if ( $default_language === $current_language ) {
  						$terms = get_the_terms($post_id, $tax);	
  					} 
  				} else {
  					$terms = get_the_terms($post_id, $tax);	
  				}