diff --git a/core/modules/node/src/ContextProvider/NodeRouteContext.php b/core/modules/node/src/ContextProvider/NodeRouteContext.php
index 8f0acd7de9..2eee8aa593 100644
--- a/core/modules/node/src/ContextProvider/NodeRouteContext.php
+++ b/core/modules/node/src/ContextProvider/NodeRouteContext.php
@@ -42,14 +42,18 @@ public function getRuntimeContexts(array $unqualified_context_ids) {
     $result = [];
     $context_definition = EntityContextDefinition::create('node')->setRequired(FALSE);
     $value = NULL;
-    if (($route_object = $this->routeMatch->getRouteObject()) && ($route_contexts = $route_object->getOption('parameters')) && isset($route_contexts['node'])) {
-      if ($node = $this->routeMatch->getParameter('node')) {
+    if (($route_object = $this->routeMatch->getRouteObject())) {
+      $route_contexts = $route_object->getOption('parameters');
+      if (isset($route_contexts['node']) && $node = $this->routeMatch->getParameter('node')) {
         $value = $node;
       }
-    }
-    elseif ($this->routeMatch->getRouteName() == 'node.add') {
-      $node_type = $this->routeMatch->getParameter('node_type');
-      $value = Node::create(['type' => $node_type->id()]);
+      elseif (isset($route_contexts['node_preview']) && $node = $this->routeMatch->getParameter('node_preview')) {
+        $value = $node;
+      }
+      elseif ($this->routeMatch->getRouteName() == 'node.add') {
+        $node_type = $this->routeMatch->getParameter('node_type');
+        $value = Node::create(['type' => $node_type->id()]);
+      }
     }
 
     $cacheability = new CacheableMetadata();
diff --git a/core/modules/node/tests/src/Functional/NodeBlockFunctionalTest.php b/core/modules/node/tests/src/Functional/NodeBlockFunctionalTest.php
index 131a9ce910..cc4dc0ba94 100644
--- a/core/modules/node/tests/src/Functional/NodeBlockFunctionalTest.php
+++ b/core/modules/node/tests/src/Functional/NodeBlockFunctionalTest.php
@@ -50,6 +50,7 @@ protected function setUp(): void {
     $this->adminUser = $this->drupalCreateUser([
       'administer content types',
       'administer nodes',
+      'bypass node access',
       'administer blocks',
       'access content overview',
     ]);
@@ -184,6 +185,11 @@ public function testRecentNodeBlock() {
     $this->assertSame('HIT', $this->getSession()->getResponseHeader('X-Drupal-Dynamic-Cache'));
 
     $this->drupalLogin($this->adminUser);
+
+    // Assert that the preview page displays the block as well.
+    $this->drupalPostForm('node/' . $node1->id() . '/edit', [], t('Preview'));
+    $this->assertSession()->pageTextContains($label);
+
     $this->drupalGet('admin/structure/block');
     $this->assertText($label, 'Block was displayed on the admin/structure/block page.');
     $this->assertLinkByHref($block->toUrl()->toString());