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diff --git a/web/core/modules/layout_builder/tests/src/Kernel/LayoutBuilderInstallTest.php b/web/core/modules/layout_builder/tests/src/Kernel/LayoutBuilderInstallTest.php
new file mode 100644
index 000000000..fa646df1c
--- /dev/null
+++ b/web/core/modules/layout_builder/tests/src/Kernel/LayoutBuilderInstallTest.php
@@ -0,0 +1,90 @@
+<?php
+
+namespace Drupal\Tests\layout_builder\Kernel;
+
+use Drupal\field\Entity\FieldConfig;
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\layout_builder\Section;
+
+/**
+ * Ensures that Layout Builder and core EntityViewDisplays are compatible.
+ *
+ * @group layout_builder
+ */
+class LayoutBuilderInstallTest extends LayoutBuilderCompatibilityTestBase {
+
+  /**
+   * Tests the compatibility of Layout Builder with existing entity displays.
+   */
+  public function testCompatibility() {
+    // Ensure that the fields are shown.
+    $expected_fields = [
+      'field field--name-name field--type-string field--label-hidden field__item',
+      'field field--name-test-field-display-configurable field--type-boolean field--label-above',
+      'clearfix text-formatted field field--name-test-display-configurable field--type-text field--label-above',
+      'clearfix text-formatted field field--name-test-display-non-configurable field--type-text field--label-above',
+      'clearfix text-formatted field field--name-test-display-multiple field--type-text field--label-above',
+    ];
+    $this->assertFieldAttributes($this->entity, $expected_fields);
+
+    $this->installLayoutBuilder();
+
+    // Without using Layout Builder for an override, the result has not changed.
+    $this->assertFieldAttributes($this->entity, $expected_fields);
+
+    // Add a layout override.
+    $this->entity->get('layout_builder__layout')->appendSection(new Section('layout_onecol'));
+    $this->entity->save();
+
+    // The rendered entity has now changed. The non-configurable field is shown
+    // outside the layout, the configurable field is not shown at all, and the
+    // layout itself is rendered (but empty).
+    $new_expected_fields = [
+      'field field--name-name field--type-string field--label-hidden field__item',
+      'clearfix text-formatted field field--name-test-display-non-configurable field--type-text field--label-above',
+      'clearfix text-formatted field field--name-test-display-multiple field--type-text field--label-above',
+    ];
+    $this->assertFieldAttributes($this->entity, $new_expected_fields);
+    $this->assertNotEmpty($this->cssSelect('.layout--onecol'));
+
+    // Removing the layout restores the original rendering of the entity.
+    $this->entity->get('layout_builder__layout')->removeSection(0);
+    $this->entity->save();
+    $this->assertFieldAttributes($this->entity, $expected_fields);
+
+    // Test that adding a new field after Layout Builder has been installed will
+    // add the new field to the default region of the first section.
+    $field_storage = FieldStorageConfig::create([
+      'entity_type' => 'entity_test_base_field_display',
+      'field_name' => 'test_field_display_post_install',
+      'type' => 'text',
+    ]);
+    $field_storage->save();
+    FieldConfig::create([
+      'field_storage' => $field_storage,
+      'bundle' => 'entity_test_base_field_display',
+      'label' => 'FieldConfig with configurable display',
+    ])->save();
+
+    $this->entity = $this->reloadEntity($this->entity);
+    $this->entity->test_field_display_post_install = 'Test string';
+    $this->entity->save();
+
+    $this->display = $this->reloadEntity($this->display);
+    $this->display
+      ->setComponent('test_field_display_post_install', ['weight' => 50])
+      ->save();
+    $new_expected_fields = [
+      'field field--name-name field--type-string field--label-hidden field__item',
+      'field field--name-test-field-display-configurable field--type-boolean field--label-above',
+      'clearfix text-formatted field field--name-test-display-configurable field--type-text field--label-above',
+      'clearfix text-formatted field field--name-test-field-display-post-install field--type-text field--label-above',
+      'clearfix text-formatted field field--name-test-display-non-configurable field--type-text field--label-above',
+      'clearfix text-formatted field field--name-test-display-multiple field--type-text field--label-above',
+    ];
+    $this->assertFieldAttributes($this->entity, $new_expected_fields);
+    $this->assertNotEmpty($this->cssSelect('.layout--onecol'));
+    $this->assertText('Test string');
+  }
+
+}