diff --git a/core/modules/language/tests/src/Kernel/LanguageDisplayConfigurationAfterUninstallTest.php b/core/modules/language/tests/src/Kernel/LanguageDisplayConfigurationAfterUninstallTest.php
new file mode 100644
index 0000000000..b253bbd2e0
--- /dev/null
+++ b/core/modules/language/tests/src/Kernel/LanguageDisplayConfigurationAfterUninstallTest.php
@@ -0,0 +1,114 @@
+<?php
+
+namespace Drupal\Tests\language\Kernel;
+
+use Drupal\Core\Entity\Entity\EntityFormDisplay;
+use Drupal\Core\Entity\Entity\EntityFormMode;
+use Drupal\KernelTests\KernelTestBase;
+use Drupal\Core\Entity\Entity\EntityViewDisplay;
+use Drupal\Core\Entity\Entity\EntityViewMode;
+
+/**
+ * Tests the language select widget.
+ *
+ * @group language
+ */
+class LanguageDisplayConfigurationAfterUninstallTest extends KernelTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $modules = [
+    'entity_test',
+    'language',
+    'field',
+    'user',
+    'system',
+  ];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+
+    // For uninstall to work.
+    $this->installSchema('user', ['users_data']);
+
+    // Create 'default' view-display.
+    $display = EntityViewDisplay::create([
+      'targetEntityType' => 'entity_test',
+      'bundle' => 'entity_test',
+      'mode' => 'default',
+      'status' => TRUE,
+    ]);
+    $display->save();
+
+    // Create 'default' form-display.
+    $display = EntityFormDisplay::create([
+      'targetEntityType' => 'entity_test',
+      'bundle' => 'entity_test',
+      'mode' => 'default',
+      'status' => TRUE,
+    ]);
+    $display->save();
+
+    // Create a view-mode 'manual', create view-display that uses it.
+    EntityViewMode::create([
+      'id' => 'entity_test.manual',
+      'targetEntityType' => 'entity_test',
+      'status' => TRUE,
+      'enabled' => TRUE,
+    ])->save();
+    $display = EntityViewDisplay::create([
+      'targetEntityType' => 'entity_test',
+      'bundle' => 'entity_test',
+      'mode' => 'manual',
+      'status' => TRUE,
+    ]);
+    $display->save();
+
+    // Create a new form-mode 'manual', create form-display that uses it.
+    EntityFormMode::create([
+      'id' => 'entity_test.manual',
+      'targetEntityType' => 'entity_test',
+      'status' => TRUE,
+      'enabled' => TRUE,
+    ])->save();
+    $display = EntityFormDisplay::create([
+      'targetEntityType' => 'entity_test',
+      'bundle' => 'entity_test',
+      'mode' => 'manual',
+      'status' => TRUE,
+    ]);
+    $display->save();
+
+  }
+
+  /**
+   * Tests display configuration after uninstalling Language module.
+   */
+  public function testConfigAfterUninstall() {
+    $default_view_display = 'core.entity_view_display.entity_test.entity_test.default';
+    $default_form_display = 'core.entity_view_display.entity_test.entity_test.default';
+    $manual_view_display = 'core.entity_view_display.entity_test.entity_test.manual';
+    $manual_form_display = 'core.entity_view_display.entity_test.entity_test.manual';
+
+    // 1. Validate that "langcode" key is there.
+    $this->assertArrayHasKey('langcode', \Drupal::config($default_view_display)->get('hidden'));
+    $this->assertArrayHasKey('langcode', \Drupal::config($default_form_display)->get('hidden'));
+    $this->assertArrayHasKey('langcode', \Drupal::config($manual_view_display)->get('hidden'));
+    $this->assertArrayHasKey('langcode', \Drupal::config($manual_form_display)->get('hidden'));
+
+    // 2. Uninstall language module.
+    \Drupal::service('module_installer')->uninstall(['language']);
+
+    // 3. Test that "langcode" key is removed from field config.
+    $this->assertArrayNotHasKey('langcode', \Drupal::config($default_view_display)->get('hidden'));
+    $this->assertArrayNotHasKey('langcode', \Drupal::config($default_form_display)->get('hidden'));
+    $this->assertArrayNotHasKey('langcode', \Drupal::config($manual_view_display)->get('hidden'));
+    $this->assertArrayNotHasKey('langcode', \Drupal::config($manual_form_display)->get('hidden'));
+
+  }
+
+}