Deepak Sagar
--- a/core/modules/content_translation/src/Controller/ContentTranslationController.php
+++ b/core/modules/content_translation/src/Controller/ContentTranslationController.php
    /** @var \Drupal\Core\Entity\ContentEntityInterface $entity */
    $entity = $route_match->getParameter($entity_type_id);

+    // If the entity already has the target translation, redirect to the
+    // translation overview page.
+    if ($entity->hasTranslation($target->getId())) {
+      return $this->redirect("entity.$entity_type_id.content_translation_overview", [$entity_type_id => $entity->id()]);
+    }
--- a/core/modules/content_translation/tests/src/Functional/ContentTranslationUITestBase.php
+++ b/core/modules/content_translation/tests/src/Functional/ContentTranslationUITestBase.php
      $this->assertSession()->responseContains('<span class="translation-entity-all-languages">(all languages)</span>');
    }

+    // Asserts that once a translation exists the user is redirected to the
+    // translations overview page.
+    if ($entity_type_id === 'entity_test_mul_changed') {
+      $this->drupalGet($add_url);
+      $this->assertSession()->statusCodeEquals(200);
+      $this->assertSession()->pageTextContains('Translations');
+      $this->assertStringContainsString('/entity_test_mul_changed/manage/1/translations', $this->getUrl());
+      // Ensure the redirect works also for user 1.
+      $this->drupalLogin($this->rootUser);
+      $this->drupalGet($add_url);
+      $this->assertSession()->statusCodeEquals(200);
+      $this->assertSession()->pageTextContains('Translations');
+      $this->assertStringContainsString('/entity_test_mul_changed/manage/1/translations', $this->getUrl());
--- a/core/modules/content_translation/src/ContentTranslationHandler.php
+++ b/core/modules/content_translation/src/ContentTranslationHandler.php
      $title = $this->entityFormTitle($entity);
      // When editing the original values display just the entity label.
      if ($is_translation) {
-        $t_args = ['%language' => $languages[$form_langcode]->getName(), '%title' => $entity->label(), '@title' => $title];
+        $t_args = ['%language' => $languages[$form_langcode]->getName(), '%title' => $entity->label() ?? $entity->id(), '@title' => $title];
--- a/core/modules/node/src/NodeTranslationHandler.php
+++ b/core/modules/node/src/NodeTranslationHandler.php
   */
  protected function entityFormTitle(EntityInterface $entity) {
    $type_name = node_get_type_label($entity);
-    return t('<em>Edit @type</em> @title', ['@type' => $type_name, '@title' => $entity->label()]);
+    return t('<em>Edit @type</em> @title', ['@type' => $type_name, '@title' => $entity->label() ?? $entity->id()]);
--- a/core/modules/node/tests/src/Functional/NodeAccessLanguageFallbackTest.php
+++ b/core/modules/node/tests/src/Functional/NodeAccessLanguageFallbackTest.php
      'bypass node access',
      'administer nodes',
      'translate any entity',
+      'create content translations',
--- a/core/modules/content_translation/tests/src/Functional/ContentTranslationTestBase.php
+++ b/core/modules/content_translation/tests/src/Functional/ContentTranslationTestBase.php
   * Returns an array of permissions needed for the translator.
   */
  protected function getTranslatorPermissions() {
-    return array_filter([$this->getTranslatePermission(), 'create content translations', 'update content translations', 'delete content translations']);
+    return array_filter([$this->getTranslatePermission(), 'create content translations', 'update content translations', 'delete content translations', 'translate any entity']);