Closes #3744 Prevent views using Quickstart Exposed Filters from scrolling when checkboxes are checked

modules/custom/az_finder/az_finder.services.yml

@@ -20,3 +20,5 @@ services:
   logger.channel.az_finder:
     parent: logger.channel_base
     arguments: ['az_finder']
+  az_finder.ajax_response_subscriber:
+    class: Drupal\az_finder\EventSubscriber\AZFinderAjaxResponseSubscriber

modules/custom/az_finder/src/EventSubscriber/AZFinderAjaxResponseSubscriber.php

@@ -0,0 +1,51 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\az_finder\EventSubscriber;
+
+use Drupal\views\Ajax\ViewAjaxResponse;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Component\HttpKernel\Event\ResponseEvent;
+use Symfony\Component\HttpKernel\KernelEvents;
+
+/**
+ * Modify AJAX responses for views using the Quickstart Exposed Filters plugin.
+ */
+class AZFinderAjaxResponseSubscriber implements EventSubscriberInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents() {
+    $events[KernelEvents::RESPONSE][] = ['onResponse'];
+    return $events;
+  }
+
+  /**
+   * Removes scrollTop AJAX commands for views with Quickstart Exposed Filters.
+   *
+   * @param \Symfony\Component\HttpKernel\Event\ResponseEvent $event
+   *   The event to process.
+   */
+  public function onResponse(ResponseEvent $event) {
+    $response = $event->getResponse();
+
+    // Only modify commands if this is an AJAX response for a view using
+    // Quickstart Exposed Filters for the exposed form.
+    if ($response instanceof ViewAjaxResponse) {
+      $exposedForm = $response->getView()->display_handler->getOption('exposed_form');
+      if (is_array($exposedForm) && $exposedForm['type'] === 'az_better_exposed_filters') {
+        $commands = &$response->getCommands();
+        foreach ($commands as $key => $value) {
+          if ($value['command'] === 'scrollTop') {
+            unset($commands[$key]);
+            // Only one scrollTop command is expected.
+            return;
+          }
+        }
+      }
+    }
+  }
+
+}