Not working with large number of terms

Hello, nice plugin but I have an issue when ordering terms.

I display in front of my website 21 terms (of 35) with this query

$context['clients'] = Timber::get_terms([
    'taxonomy' => 'clients',
    'hide_empty' => false,
    'number' => 21
]);

My client want to reorder those 21 with drag and drop so I installed your plugin. It was working until he drag and drop terms that are greater than position 21 (default WordPress alphabetical position). They are not displaying at all in front.

What could be wrong ?