3oax

here a little workaround. Not really the nicest way but it works for now, till it’s fixed:

function oax_yith_wcan_filter_url($url, $query_vars, $merge_mode){
	$prefix_query_type = 'query_type_';
	$prefix_filter = 'filter_';
	
	$onlyOneValid = [
		$prefix_filter . 'yourfilterhere',
		$prefix_filter . 'anotherfilterhere',
	];

	$url_arr = wp_parse_url($url);
	parse_str($url_arr['query'], $url_query_arr);

	foreach($url_query_arr as $url_query_key => $url_query_val){
		$url_query_key_cleaned = str_replace([$prefix_query_type, $prefix_filter], ['', ''], $url_query_key);
		if( in_array($url_query_key, $onlyOneValid) ){
			$checkParts = explode(',', $url_query_val);
			if( count($checkParts) > 1 ){
				$url_query_arr[$url_query_key] = end($checkParts);
			}
		}
	}

	$url_arr['query'] = http_build_query($url_query_arr);

	$url = $url_arr['scheme'] . '://' . $url_arr['host'] . $url_arr['path'] . '?' . $url_arr['query'];
	
	return $url;
}
add_filter('yith_wcan_filter_url', 'oax_yith_wcan_filter_url', 10, 3);

Same Problem. Any Fixes?