From 6202570bcbfb791305e80078ddd477696bac94d2 Mon Sep 17 00:00:00 2001
From: brandonkelly <brandon@pixelandtonic.com>
Date: Mon, 6 Jan 2025 10:31:51 -0800
Subject: [PATCH 1/2] Fixed structure relationship eager-loading on some envs

Fixes #16381
Fixes #16382
---
 CHANGELOG.md         | 1 +
 src/base/Element.php | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4c176861530..ad5f2931c18 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 - Fixed a bug where custom fields could cause validation errors when running the `users/create` command.
 - Fixed a bug where deleting a volume folder wasn’t fully deleting asset data in descendant folders.
+- Fixed a bug where `ancestors`, `children`, `descendants`, and `parent` eager-loading wasn’t working on some environments. ([#16381](https://github.com/craftcms/cms/issues/16381), [#16382](https://github.com/craftcms/cms/issues/16382))
 
 ## 4.13.8 - 2025-01-02
 
diff --git a/src/base/Element.php b/src/base/Element.php
index 17704bf9edd..46066b55bdf 100644
--- a/src/base/Element.php
+++ b/src/base/Element.php
@@ -1469,7 +1469,7 @@ private static function _mapDescendants(array $sourceElements, bool $children):
         foreach ($elementStructureData as $elementStructureDatum) {
             foreach ($descendantStructureData as $descendantStructureDatum) {
                 if (
-                    $descendantStructureDatum['structureId'] === $elementStructureDatum['structureId'] &&
+                    $descendantStructureDatum['structureId'] == $elementStructureDatum['structureId'] &&
                     $descendantStructureDatum['lft'] > $elementStructureDatum['lft'] &&
                     $descendantStructureDatum['rgt'] < $elementStructureDatum['rgt'] &&
                     (!$children || $descendantStructureDatum['level'] == $elementStructureDatum['level'] + 1)

From e982ab8c3990c7f4cfec09bc6bfcc1a769450823 Mon Sep 17 00:00:00 2001
From: brandonkelly <brandon@pixelandtonic.com>
Date: Mon, 6 Jan 2025 10:33:21 -0800
Subject: [PATCH 2/2] Finish 4.13.9

---
 CHANGELOG.md       | 2 +-
 src/config/app.php | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index ad5f2931c18..e2ad6f1f0bd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Release Notes for Craft CMS 4
 
-## Unreleased
+## 4.13.9 - 2025-01-06
 
 - Fixed a bug where custom fields could cause validation errors when running the `users/create` command.
 - Fixed a bug where deleting a volume folder wasn’t fully deleting asset data in descendant folders.
diff --git a/src/config/app.php b/src/config/app.php
index 2336b7570c3..95bf7853436 100644
--- a/src/config/app.php
+++ b/src/config/app.php
@@ -3,7 +3,7 @@
 return [
     'id' => 'CraftCMS',
     'name' => 'Craft CMS',
-    'version' => '4.13.8',
+    'version' => '4.13.9',
     'schemaVersion' => '4.5.3.0',
     'minVersionRequired' => '3.7.11',
     'basePath' => dirname(__DIR__), // Defines the @app alias