diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 485b2f7..98e8466 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -150,3 +150,56 @@ jobs:
 
       - name: Run Unit Tests
         run: vendor/bin/phpunit --configuration=phpunit.xml
+
+  functional-tests:
+    name: Functional Tests
+    runs-on: ubuntu-latest
+    needs: [phpstan, rector]
+    strategy:
+      fail-fast: false
+      matrix:
+        php-version: ['8.2', '8.3', '8.4']
+        typo3-version: ['^13.4', '^14.0']
+        exclude:
+          # TYPO3 14 requires PHP 8.3+
+          - php-version: '8.2'
+            typo3-version: '^14.0'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-version }}
+          extensions: intl, pdo_sqlite, sqlite3
+          coverage: none
+
+      - name: Get Composer cache directory
+        id: composer-cache
+        run: echo "dir=$(composer config cache-files-dir)" >> $GITHUB_OUTPUT
+
+      - name: Cache Composer dependencies
+        uses: actions/cache@v5
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-composer-functional-${{ matrix.php-version }}-${{ matrix.typo3-version }}-${{ hashFiles('**/composer.json') }}
+          restore-keys: |
+            ${{ runner.os }}-composer-functional-${{ matrix.php-version }}-${{ matrix.typo3-version }}-
+            ${{ runner.os }}-composer-
+
+      - name: Remove incompatible dev dependencies for TYPO3 14
+        if: matrix.typo3-version == '^14.0'
+        run: |
+          composer remove --dev saschaegerer/phpstan-typo3 --no-interaction --no-update
+
+      - name: Install dependencies
+        run: |
+          composer require typo3/cms-core:${{ matrix.typo3-version }} typo3/cms-frontend:${{ matrix.typo3-version }} --no-progress --no-interaction
+          composer install --no-progress --no-interaction
+
+      - name: Run Functional Tests
+        env:
+          typo3DatabaseDriver: pdo_sqlite
+          typo3DatabaseName: typo3_test
+        run: vendor/bin/phpunit --configuration=phpunit.functional.xml
diff --git a/CHANGELOG.md b/CHANGELOG.md
index bf7c50d..64cc937 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,16 @@ All notable changes to the rt_llms_txt extension will be documented in this file
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.0.12] - 2026-04-25
+
+### Fixed
+
+- **Bug:** Pages located below a "Spacer" page (`doktype = 199`, "Trennzeichen für Menü") are now included in `llms.txt`. Previously the spacer row was filtered out by the SQL query, which suppressed all of its descendants (issue [#2](https://github.com/rtfirst/llms-txt/issues/2)). Spacers themselves remain excluded from the output, matching the TYPO3 frontend menu behavior.
+
+### Added
+
+- Functional test coverage for `PageTreeService` (spacer traversal, nested spacers, explicit page exclusion).
+
 ## [1.0.11] - 2026-03-22
 
 ### Added
diff --git a/Classes/Service/PageTreeService.php b/Classes/Service/PageTreeService.php
index ff1f3cd..1493b23 100644
--- a/Classes/Service/PageTreeService.php
+++ b/Classes/Service/PageTreeService.php
@@ -121,12 +121,14 @@ private function collectPages(
             $queryBuilder->expr()->eq('tx_llmstxt_exclude', 0), // Exclude pages marked for exclusion
         ];
 
-        // Exclude certain doktypes (folders, recycler, etc.)
-        // doktype values: 254=sysfolder, 255=recycler, 199=spacer, 6=be_user_section
+        // Exclude doktypes that never produce frontend output and have no
+        // visible descendants (folders, recycler, BE user section).
+        // Spacers (199) are intentionally NOT excluded here: they may have
+        // child pages that should appear in llms.txt. The spacer row itself
+        // is filtered out below.
         $excludedDoktypes = [
             255, // Recycler
             PageRepository::DOKTYPE_SYSFOLDER,
-            PageRepository::DOKTYPE_SPACER,
             PageRepository::DOKTYPE_BE_USER_SECTION,
         ];
         $constraints[] = $queryBuilder->expr()->notIn(
@@ -152,6 +154,13 @@ private function collectPages(
         while ($row = $result->fetchAssociative()) {
             $pageUid = (int)$row['uid'];
 
+            // Spacer pages are menu separators and are not output themselves,
+            // but their child pages must still be discovered.
+            if ((int)$row['doktype'] === PageRepository::DOKTYPE_SPACER) {
+                $this->collectPages($pageUid, $languageId, $excludePageUids, $includeHidden, $pages, $language);
+                continue;
+            }
+
             // Get translated page if not default language
             if ($languageId > 0) {
                 $translatedPage = $this->getTranslatedPage($pageUid, $languageId, $includeHidden);
diff --git a/Documentation/guides.xml b/Documentation/guides.xml
index 462b1d5..3ffbc77 100644
--- a/Documentation/guides.xml
+++ b/Documentation/guides.xml
@@ -8,7 +8,7 @@
     >
     <project
         title="LLMs.txt Generator"
-        release="1.0.11"
+        release="1.0.12"
         copyright="Roland Tfirst"
     />
     <extension
diff --git a/Tests/Functional/Fixtures/Pages.csv b/Tests/Functional/Fixtures/Pages.csv
new file mode 100644
index 0000000..f9e0fb0
--- /dev/null
+++ b/Tests/Functional/Fixtures/Pages.csv
@@ -0,0 +1,10 @@
+"pages"
+,"uid","pid","sys_language_uid","l10n_parent","title","doktype","slug","sorting","hidden","deleted","tx_llmstxt_exclude"
+,1,0,0,0,"Root",1,"/",1,0,0,0
+,2,1,0,0,"Normal child",1,"/normal-child",2,0,0,0
+,3,1,0,0,"Spacer in menu",199,"/spacer",3,0,0,0
+,4,3,0,0,"Child of spacer",1,"/spacer/child-of-spacer",1,0,0,0
+,5,4,0,0,"Grandchild via spacer",1,"/spacer/child-of-spacer/grandchild",1,0,0,0
+,6,3,0,0,"Nested spacer",199,"/spacer/nested-spacer",2,0,0,0
+,7,6,0,0,"Deep child via nested spacers",1,"/spacer/nested-spacer/deep-child",1,0,0,0
+,8,1,0,0,"Excluded page",1,"/excluded",4,0,0,1
diff --git a/Tests/Functional/Service/PageTreeServiceTest.php b/Tests/Functional/Service/PageTreeServiceTest.php
new file mode 100644
index 0000000..d42fe04
--- /dev/null
+++ b/Tests/Functional/Service/PageTreeServiceTest.php
@@ -0,0 +1,85 @@
+<?php
+
+declare(strict_types=1);
+
+namespace RTfirst\LlmsTxt\Tests\Functional\Service;
+
+use PHPUnit\Framework\Attributes\Test;
+use RTfirst\LlmsTxt\Service\PageTreeService;
+use TYPO3\CMS\Core\Site\Entity\Site;
+use TYPO3\TestingFramework\Core\Functional\FunctionalTestCase;
+
+final class PageTreeServiceTest extends FunctionalTestCase
+{
+    protected array $coreExtensionsToLoad = [
+        'frontend',
+    ];
+
+    protected array $testExtensionsToLoad = [
+        'rtfirst/llms-txt',
+    ];
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+        $this->importCSVDataSet(__DIR__ . '/../Fixtures/Pages.csv');
+    }
+
+    #[Test]
+    public function pagesUnderSpacerAreIncluded(): void
+    {
+        $service = $this->get(PageTreeService::class);
+        \assert($service instanceof PageTreeService);
+
+        $site = $this->createSite();
+        $pages = $service->getPages($site, $site->getDefaultLanguage());
+
+        $uids = array_keys($pages);
+        sort($uids);
+
+        // Spacer (3, 6) absent; their descendants (4, 5, 7) present.
+        // Excluded page (8) absent.
+        self::assertSame([1, 2, 4, 5, 7], $uids);
+    }
+
+    #[Test]
+    public function spacerPageItselfIsNotIncluded(): void
+    {
+        $service = $this->get(PageTreeService::class);
+        \assert($service instanceof PageTreeService);
+
+        $site = $this->createSite();
+        $pages = $service->getPages($site, $site->getDefaultLanguage());
+
+        self::assertArrayNotHasKey(3, $pages, 'Spacer page must not appear in output');
+        self::assertArrayNotHasKey(6, $pages, 'Nested spacer page must not appear in output');
+    }
+
+    #[Test]
+    public function explicitlyExcludedPageIsRespected(): void
+    {
+        $service = $this->get(PageTreeService::class);
+        \assert($service instanceof PageTreeService);
+
+        $site = $this->createSite();
+        $pages = $service->getPages($site, $site->getDefaultLanguage(), [2]);
+
+        self::assertArrayNotHasKey(2, $pages);
+        self::assertArrayHasKey(4, $pages, 'Children of spacer remain when an unrelated page is excluded');
+    }
+
+    private function createSite(): Site
+    {
+        return new Site('test', 1, [
+            'base' => 'https://example.com/',
+            'languages' => [
+                [
+                    'languageId' => 0,
+                    'title' => 'Default',
+                    'locale' => 'en_US.UTF-8',
+                    'base' => '/',
+                ],
+            ],
+        ]);
+    }
+}
diff --git a/Tests/Functional/bootstrap.php b/Tests/Functional/bootstrap.php
new file mode 100644
index 0000000..59a3963
--- /dev/null
+++ b/Tests/Functional/bootstrap.php
@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+$autoloadCandidates = [
+    __DIR__ . '/../../vendor/autoload.php',
+    __DIR__ . '/../../../../vendor/autoload.php',
+    __DIR__ . '/../../../../../../vendor/autoload.php',
+];
+
+$autoloader = null;
+foreach ($autoloadCandidates as $candidate) {
+    if (file_exists($candidate)) {
+        $autoloader = require $candidate;
+        break;
+    }
+}
+
+if ($autoloader === null) {
+    fwrite(STDERR, "Composer autoloader not found.\n");
+    exit(1);
+}
+
+$frameworkBootstrap = \dirname((string)(new ReflectionClass(\TYPO3\TestingFramework\Core\Testbase::class))->getFileName(), 3)
+    . '/Resources/Core/Build/FunctionalTestsBootstrap.php';
+
+require $frameworkBootstrap;
diff --git a/ext_emconf.php b/ext_emconf.php
index 0cbb076..fe23263 100644
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -7,7 +7,7 @@
     'author' => 'Roland Tfirst',
     'author_email' => 'roland@tfirst.de',
     'state' => 'stable',
-    'version' => '1.0.11',
+    'version' => '1.0.12',
     'constraints' => [
         'depends' => [
             'typo3' => '13.0.0-14.99.99',
diff --git a/phpunit.functional.xml b/phpunit.functional.xml
new file mode 100644
index 0000000..f93b82e
--- /dev/null
+++ b/phpunit.functional.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.5/phpunit.xsd"
+         bootstrap="Tests/Functional/bootstrap.php"
+         cacheDirectory=".phpunit.cache"
+         cacheResult="false"
+         colors="true"
+         displayDetailsOnTestsThatTriggerWarnings="true"
+         displayDetailsOnTestsThatTriggerNotices="true"
+         displayDetailsOnTestsThatTriggerDeprecations="true"
+         displayDetailsOnTestsThatTriggerErrors="true"
+         beStrictAboutOutputDuringTests="true"
+         failOnRisky="true"
+         failOnWarning="true">
+    <testsuites>
+        <testsuite name="Functional">
+            <directory>Tests/Functional</directory>
+        </testsuite>
+    </testsuites>
+    <php>
+        <env name="typo3DatabaseDriver" value="pdo_sqlite"/>
+        <env name="typo3DatabaseName" value="typo3_test"/>
+        <ini name="memory_limit" value="512M"/>
+    </php>
+</phpunit>