[Escalated to WPML Developers team] Updating a term translation with wp_update_term returns error

I am trying to: update a term using wp_update_term and it returns:
"The slug “wheel-harvester” is already in use by another term."

Link to a page where the issue can be seen:
hidden link

I expected to see:
That swedish description of this term has been updated

Instead, I got:
"The slug “wheel-harvester” is already in use by another term."

Term we are trying to update is the existing Swedish term 98.
PHP Code executed behind the page "test-debug-tc-wpml.php" is:

============== PHP CODE =====================
require_once( dirname(__FILE__) . '../../../../wp-load.php' );

$term_id = 98;
$taxonomy = 'product_types';
$current_lang = apply_filters( 'wpml_current_language', NULL );

$term_language_code = apply_filters( 'wpml_element_language_code', null, ['element_id' => $term_id, 'element_type' => $taxonomy] );
do_action( 'wpml_switch_language', $term_language_code );

$updated = wp_update_term( $term_id, $taxonomy, array('description'=> 'Högpresterande kortvirkesskördare som är byggda för tuff användning och krävande arbetscykler. Utmärkt sikt för föraren, nivellerande hytt och Tigercats kraftfulla WideRange®-drift hjälper till att maximera produktiviteten.') );

do_action( 'wpml_switch_language', $current_lang );

if ( ! is_wp_error( $updated ) ) {
var_dump($updated);
} else {
echo $updated->get_error_message();
}

============== PHP CODE =====================