Resolve #3222919 "Missingscopes"

Closes #3222919

src/Form/GoogleApiServiceClientForm.php

@@ -85,6 +85,7 @@ class GoogleApiServiceClientForm extends EntityForm {
       '#title' => $this->t('Services'),
       '#default_value' => $google_api_service_client->isNew() ? '' : $google_api_service_client->getServices(),
       '#options' => $services,
+      "#size" => 20,
     ];
     $services = array_keys($services);
     $scopes = google_api_client_google_services_scopes($services);
@@ -94,6 +95,7 @@ class GoogleApiServiceClientForm extends EntityForm {
       '#title' => $this->t('Scopes'),
       '#default_value' => $google_api_service_client->isNew() ? '' : $google_api_service_client->getScopes(),
       '#options' => $scopes,
+      "#size" => 20,
     ];
     $form['#attached']['library'][] = 'google_api_client/google_api_client.add_client';