In some cases language switcher is not working correctly

[KMantas]

As I understood wpml_permalink_filter inside class-custom-permalinks-frontend.php
is used to solve language switcher issues, but in my case it is not working. My language setting is: domain/lang-code.
This code:
trailingslashit( home_url() )
returns home page with language, then if translated post has same permalink then wpml_permalink_filter points to current language instead of translated.
For my case temporary fix is this:
replace
$trailing_permalink = trailingslashit( home_url() ) . $custom_permalink;

with:

if ($language_code) {
			$trailing_permalink = trailingslashit(get_option( 'home' )) .trailingslashit($language_code) .$permalink;
		} else {
			$trailing_permalink = trailingslashit( home_url() ) . $custom_permalink;
		}

but probably it is not correct for all cases