diff --git a/src/Plugin/Field/FieldWidget/ParagraphsWidget.php b/src/Plugin/Field/FieldWidget/ParagraphsWidget.php
index 66e8db0..731dcda 100644
--- a/src/Plugin/Field/FieldWidget/ParagraphsWidget.php
+++ b/src/Plugin/Field/FieldWidget/ParagraphsWidget.php
@@ -464,6 +464,38 @@ class ParagraphsWidget extends WidgetBase {
         }
       }
 
+      // If untranslatable fields are hidden while translating, we are
+      // translating the parent and the Paragraph is open, then close the
+      // Paragraph if it does not have translatable fields.
+      $translating_force_close = FALSE;
+      if (\Drupal::moduleHandler()->moduleExists('content_translation')) {
+        $manager = \Drupal::service('content_translation.manager');
+        $settings = $manager->getBundleTranslationSettings('paragraph', $paragraphs_entity->getParagraphType()->id());
+        if (!empty($settings['untranslatable_fields_hide']) && $this->isTranslating) {
+          $translating_force_close = TRUE;
+          $display = EntityFormDisplay::collectRenderDisplay($paragraphs_entity, $this->getSetting('form_display_mode'));
+          // Check if the paragraph has translatable fields.
+          foreach (array_keys($display->get('content')) as $field) {
+            if ($paragraphs_entity->hasField($field)) {
+              $field_definition = $paragraphs_entity->get($field)->getFieldDefinition();
+              if ($field_definition->getType() == 'entity_reference_revisions') {
+                // Check if we are referencing paragraphs.
+                if ($field_definition->getSetting('target_type') == 'paragraph') {
+                  $translating_force_close = FALSE;
+                }
+              }
+              if ($field_definition->isTranslatable()) {
+                $translating_force_close = FALSE;
+              }
+            }
+          }
+
+          if ($translating_force_close) {
+            $item_mode = 'closed';
+          }
+        }
+      }
+
       $element_parents = $parents;
       $element_parents[] = $field_name;
       $element_parents[] = $delta;
@@ -600,7 +632,7 @@ class ParagraphsWidget extends WidgetBase {
                 'callback' => [get_class($this), 'itemAjax'],
                 'wrapper' => $widget_state['ajax_wrapper_id'],
               ],
-              '#access' => $paragraphs_entity->access('update'),
+              '#access' => $paragraphs_entity->access('update') && !$translating_force_close,
               '#paragraphs_mode' => 'closed',
               '#paragraphs_show_warning' => TRUE,
               '#attributes' => [
@@ -625,7 +657,7 @@ class ParagraphsWidget extends WidgetBase {
               'callback' => [get_class($this), 'itemAjax'],
               'wrapper' => $widget_state['ajax_wrapper_id'],
             ],
-            '#access' => $paragraphs_entity->access('update'),
+            '#access' => $paragraphs_entity->access('update') && !$translating_force_close,
             '#paragraphs_mode' => 'edit',
             '#attributes' => [
               'class' => ['paragraphs-icon-button', 'paragraphs-icon-button-edit'],
diff --git a/tests/src/Functional/ParagraphsExperimentalTranslationsTest.php b/tests/src/Functional/ParagraphsExperimentalTranslationsTest.php
new file mode 100644
index 0000000..b5c0005
--- /dev/null
+++ b/tests/src/Functional/ParagraphsExperimentalTranslationsTest.php
@@ -0,0 +1,168 @@
+<?php
+
+namespace Drupal\Tests\paragraphs\Functional;
+
+use Drupal\field_ui\Tests\FieldUiTestTrait;
+use Drupal\paragraphs\Tests\Classic\ParagraphsCoreVersionUiTestTrait;
+use Drupal\language\Entity\ConfigurableLanguage;
+use Drupal\Tests\BrowserTestBase;
+use Drupal\Tests\paragraphs\FunctionalJavascript\LoginAdminTrait;
+use Drupal\Tests\paragraphs\FunctionalJavascript\ParagraphsTestBaseTrait;
+use Drupal\Tests\paragraphs\Traits\ParagraphsLastEntityQueryTrait;
+
+/**
+ * Test paragraphs with translations.
+ *
+ * @group paragraphs
+ */
+class ParagraphsExperimentalTranslationsTest extends BrowserTestBase {
+
+  use LoginAdminTrait;
+  use FieldUiTestTrait;
+  use ParagraphsTestBaseTrait;
+  use ParagraphsCoreVersionUiTestTrait;
+  use ParagraphsLastEntityQueryTrait;
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = [
+    'node',
+    'paragraphs_test',
+    'paragraphs',
+    'field',
+    'field_ui',
+    'block',
+    'link',
+    'content_translation'
+  ];
+
+  /**
+   * User with admin rights.
+   *
+   * @var \Drupal\Core\Session\AccountInterface
+   */
+  protected $visitorUser;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+    // Place the breadcrumb, tested in fieldUIAddNewField().
+    $this->drupalPlaceBlock('system_breadcrumb_block');
+    $this->drupalPlaceBlock('local_tasks_block');
+    $this->drupalPlaceBlock('local_actions_block');
+    $this->drupalPlaceBlock('page_title_block');
+
+    $this->addParagraphedContentType('paragraphed_test', 'field_paragraphs', 'paragraphs');
+
+    ConfigurableLanguage::createFromLangcode('de')->save();
+    $this->loginAsAdmin([
+      'access administration pages',
+      'view all revisions',
+      'revert all revisions',
+      'administer nodes',
+      'bypass node access',
+      'administer content translation',
+      'translate any entity',
+      'create content translations',
+      'administer languages',
+      'administer content types',
+      'administer node form display',
+      'edit any paragraphed_test content',
+      'create paragraphed_test content',
+      'edit behavior plugin settings',
+    ]);
+
+    $this->visitorUser = $this->drupalCreateUser([
+      'access content',
+      'view all revisions',
+    ]);
+
+    // Add a Paragraph type.
+    $this->addParagraphsType('text_translatable');
+    $this->addParagraphsType('text_untranslatable');
+    $this->addParagraphsType('text_untranslatable_hide');
+    $this->addParagraphsType('container');
+    $this->addFieldtoParagraphType('text_translatable', 'field_text_translatable', 'text');
+    $this->addFieldtoParagraphType('text_untranslatable', 'field_text_untranslatable', 'text');
+    $this->addFieldtoParagraphType('text_untranslatable_hide', 'field_text_untranslatable_hide', 'text');
+    $this->addParagraphsField('container', 'field_paragraphs', 'paragraph');
+
+    $this->drupalGet('admin/config/regional/content-language');
+    $this->assertSession()->pageTextContains('Paragraph types that are used in moderated content requires non-translatable fields to be edited in the original language form and this must be checked.');
+    $edit = [
+      'entity_types[paragraph]' => TRUE,
+      'entity_types[node]' => TRUE,
+      'settings[node][paragraphed_test][translatable]' => TRUE,
+      'settings[node][paragraphed_test][fields][field_paragraphs]' => FALSE,
+      'settings[node][paragraphed_test][settings][language][language_alterable]' => TRUE,
+      'settings[paragraph][text_translatable][translatable]' => TRUE,
+      'settings[paragraph][text_untranslatable][translatable]' => TRUE,
+      'settings[paragraph][text_untranslatable_hide][translatable]' => TRUE,
+      'settings[paragraph][container][translatable]' => TRUE,
+      'settings[paragraph][text_translatable][settings][content_translation][untranslatable_fields_hide]' => TRUE,
+      'settings[paragraph][text_untranslatable][settings][content_translation][untranslatable_fields_hide]' => FALSE,
+      'settings[paragraph][text_untranslatable_hide][settings][content_translation][untranslatable_fields_hide]' => TRUE,
+      'settings[paragraph][container][settings][content_translation][untranslatable_fields_hide]' => TRUE,
+      'settings[paragraph][text_translatable][fields][field_text_translatable]' => TRUE,
+      'settings[paragraph][text_untranslatable][fields][field_text_untranslatable]' => FALSE,
+      'settings[paragraph][text_untranslatable_hide][fields][field_text_untranslatable_hide]' => FALSE,
+      'settings[paragraph][container][fields][field_paragraphs]' => FALSE,
+    ];
+    $this->drupalPostForm(NULL, $edit, t('Save configuration'));
+  }
+
+  /**
+   * Tests auto collapse when paragraphs do not have translatable fields.
+   */
+  public function testUntranslatableAutoCollapse() {
+    $session = $this->getSession();
+    $page = $session->getPage();
+    $assert_session = $this->assertSession();
+
+    $this->drupalGet('node/add/paragraphed_test');
+    // Create a text paragraphs, a container paragraph with a text inside.
+    $page->fillField('title[0][value]', 'Page 1 EN');
+    $page->pressButton('Add text_translatable');
+    $page->pressButton('Add text_untranslatable');
+    $page->pressButton('Add text_untranslatable_hide');
+    $page->pressButton('Add container');
+    $page->fillField('field_paragraphs[0][subform][field_text_translatable][0][value]', 'Translate me EN');
+    $page->fillField('field_paragraphs[1][subform][field_text_untranslatable][0][value]', 'Do not translate me EN');
+    $page->fillField('field_paragraphs[2][subform][field_text_untranslatable_hide][0][value]', 'Do not translate me CLOSED EN');
+    $page->pressButton('Save');
+
+    $assert_session->pageTextContains('paragraphed_test Page 1 EN has been created.');
+
+    $host_node = $this->getLastEntityOfType('node', TRUE);
+    $host_node_id = $host_node->id();
+
+    // Assert that the paragraph with no translatable fields is closed.
+    $this->drupalGet("/de/node/{$host_node_id}/translations/add/en/de");
+    $assert_session->fieldExists('field_paragraphs[0][subform][field_text_translatable][0][value]');
+    $assert_session->buttonExists('field_paragraphs_0_collapse');
+    // Check that the Paragraph with no translatable fields and with setting for
+    // hiding the fields is showing the summary and it cannot be opened or
+    // closed.
+    $assert_session->fieldNotExists('field_paragraphs[2][subform][field_text_untranslatable_hide][0][value]');
+    $assert_session->buttonNotExists('field_paragraphs_2_collapse');
+    $assert_session->buttonNotExists('field_paragraphs_2_edit');
+    $assert_session->responseContains('<div class="paragraphs-collapsed-description">Do not translate me CLOSED EN');
+
+    $assert_session->buttonExists('field_paragraphs_1_collapse');
+    $assert_session->fieldExists('field_paragraphs[1][subform][field_text_untranslatable][0][value]');
+    $page->pressButton('field_paragraphs_1_collapse');
+    $assert_session->fieldNotExists('field_paragraphs[1][subform][field_text_untranslatable][0][value]');
+    $assert_session->responseContains('<div class="paragraphs-collapsed-description">Do not translate me EN');
+    $assert_session->buttonExists('field_paragraphs_1_edit');
+
+    $assert_session->buttonExists('field_paragraphs_3_collapse');
+    $page->pressButton('field_paragraphs_3_collapse');
+    $assert_session->buttonExists('field_paragraphs_3_edit');
+  }
+
+}