diff --git a/core/lib/Drupal/Core/Template/TwigExtension.php b/core/lib/Drupal/Core/Template/TwigExtension.php
index 693da9a..0032770 100644
--- a/core/lib/Drupal/Core/Template/TwigExtension.php
+++ b/core/lib/Drupal/Core/Template/TwigExtension.php
@@ -497,6 +497,10 @@ public function renderVar($arg) {
       return NULL;
     }
 
+    if ($arg instanceof MarkupInterface) {
+      return $arg;
+    }
+
     // Optimize for scalars as it is likely they come from the escape filter.
     if (is_scalar($arg)) {
       return $arg;
diff --git a/core/lib/Drupal/Core/Template/TwigNodeTrans.php b/core/lib/Drupal/Core/Template/TwigNodeTrans.php
index 6bd4b8a..f7d0bcd 100644
--- a/core/lib/Drupal/Core/Template/TwigNodeTrans.php
+++ b/core/lib/Drupal/Core/Template/TwigNodeTrans.php
@@ -67,10 +67,9 @@ public function compile(\Twig_Compiler $compiler) {
     // leave as an empty array.
     $compiler->raw(', array(');
     foreach ($tokens as $token) {
-      $compiler->string($token->getAttribute('placeholder'))->raw(' => ')->subcompile($token)->raw(', ');
+      $compiler->string($token->getAttribute('placeholder'))->raw(' => $this->env->getExtension(\'drupal_core\')->renderVar(')->subcompile($token)->raw('), ');
     }
     $compiler->raw(')');
-
     // Write any options passed.
     if (!empty($options)) {
       $compiler->raw(', ')->subcompile($options);
diff --git a/core/modules/system/src/Tests/Theme/TwigTransTest.php b/core/modules/system/src/Tests/Theme/TwigTransTest.php
index 6bfe442..e35719c 100644
--- a/core/modules/system/src/Tests/Theme/TwigTransTest.php
+++ b/core/modules/system/src/Tests/Theme/TwigTransTest.php
@@ -97,6 +97,14 @@ public function testTwigTransTags() {
   }
 
   /**
+   * Testing trans with render array value.
+   */
+  public function testTransRenderArray() {
+    $this->drupalGet('twig-theme-test/render-array');
+    $this->assertText('This is a trans render array', '{% trans %} with render array value is working correctly.');
+  }
+
+  /**
    * Asserts Twig trans tags.
    */
   protected function assertTwigTransTags() {
diff --git a/core/modules/system/tests/modules/twig_theme_test/src/TwigThemeTestController.php b/core/modules/system/tests/modules/twig_theme_test/src/TwigThemeTestController.php
index 3ca428b..37376e6 100644
--- a/core/modules/system/tests/modules/twig_theme_test/src/TwigThemeTestController.php
+++ b/core/modules/system/tests/modules/twig_theme_test/src/TwigThemeTestController.php
@@ -109,4 +109,13 @@ public function renderable() {
     ];
   }
 
+  /**
+   * Controller for testing trans with render array value.
+   */
+  public function transRenderArray() {
+    return [
+      '#theme' => 'twig_theme_test_trans_render_array',
+    ];
+  }
+
 }
diff --git a/core/modules/system/tests/modules/twig_theme_test/templates/twig_theme_test.trans_render_array.html.twig b/core/modules/system/tests/modules/twig_theme_test/templates/twig_theme_test.trans_render_array.html.twig
new file mode 100644
index 0000000..ea04c5d
--- /dev/null
+++ b/core/modules/system/tests/modules/twig_theme_test/templates/twig_theme_test.trans_render_array.html.twig
@@ -0,0 +1,3 @@
+{% trans %}
+  This is a {{ var }}.
+{% endtrans %}
diff --git a/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.module b/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.module
index cba0d5b..712b8d7 100644
--- a/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.module
+++ b/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.module
@@ -19,6 +19,16 @@ function twig_theme_test_theme($existing, $type, $theme, $path) {
     'variables' => array('var' => ''),
     'template' => 'twig_theme_test.placeholder_outside_trans',
   );
+  $items['twig_theme_test_trans_render_array'] = array(
+    'variables' => array(
+      'var' => array(
+        '#prefix' => '<b>',
+        '#markup' => 'trans render array',
+        '#suffix' => '</b>',
+      ),
+    ),
+    'template' => 'twig_theme_test.trans_render_array',
+  );
   $items['twig_namespace_test'] = array(
     'variables' => array(),
     'template' => 'twig_namespace_test',
diff --git a/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.routing.yml b/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.routing.yml
index df665c3..8bc6684 100644
--- a/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.routing.yml
+++ b/core/modules/system/tests/modules/twig_theme_test/twig_theme_test.routing.yml
@@ -69,3 +69,10 @@ twig_theme_test_renderable:
     _controller: '\Drupal\twig_theme_test\TwigThemeTestController::renderable'
   requirements:
     _access: 'TRUE'
+
+twig_theme_test_render_array:
+  path: '/twig-theme-test/render-array'
+  defaults:
+    _controller: '\Drupal\twig_theme_test\TwigThemeTestController::transRenderArray'
+  requirements:
+    _access: 'TRUE'