Printing items per page in twig template not triggering form submit on views template

This has steps to reproduce like a bug report but it is a support request.

You are putting the select element outside the form tag

The browser won't submit it unless you set the form attribute on the select to the id of the form element

This isn't a Drupal thing, it's how browsers work

So i need to do this via hook_preprocess_template right?

Can you some example how to achieve this

You will likely need a hook form alter to modify the views exposed form and set the form attribute on the select field

e.g.

function YOURTHEME_form_views_exposed_form_alter(&$form) {
  $view = $form['#view'];
  $form['items_per_page']['#attributes']['form'] = $view->id();
}

Something like that

ok thanks

Instead of printing the 'Items per page' as {{exposed.items_per_page}}, print it by excluding any other exposed filters such as {{exposed|without('filter_name_one','filter_name_two','filter_name_three')}}.
This is how I'm doing it:

{% if pager %}
      <div class="col-md-10 ms-md-4">
        <div class="row d-flex align-items-center">
          <div class="col-md-8">
            {{ pager }}
          </div>
        {% if exposed %}
          <div class="col-md-4 d-flex align-items-center view-filters">
            <span class="me-md-2">{{'Show'|t}}</span>{{ exposed|without('field_question_right_category_target_id', 'field_state_transition_value') }}
          </div>
        {% endif %}
        </div>
      </div>
    {% endif %}