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Problem:
If you're using WPML with a custom FSE (Block) theme and notice that the dropdown CSS and JavaScript for the Language Switcher Gutenberg block are not being enqueued on the front page, even though they work in the Gutenberg editor.
Solution:
We recommend adding the following custom PHP code to your theme's

functions.php

file:

<!-- wpmlsupp-11260 --><br />add_action('init', function(){<br />    wp_enqueue_block_style('wpml/language-switcher', [<br />        'handle' => 'wp-block-navigation'<br />    ]);<br />});

This code manually enqueues the necessary styles for the language switcher block. If this solution doesn't resolve your issue, please open a new support ticket with us.