diff --git a/core/lib/Drupal/Core/Database/Driver/fake/FakeConnection.php b/core/lib/Drupal/Core/Database/Driver/fake/FakeConnection.php
index c39005a..96a9375 100644
--- a/core/lib/Drupal/Core/Database/Driver/fake/FakeConnection.php
+++ b/core/lib/Drupal/Core/Database/Driver/fake/FakeConnection.php
@@ -257,10 +257,12 @@ protected function popCommittableTransactions() {
         $this->databaseContentsStack = array('default' => $this->databaseContentsStack[$name]);
       }
       else {
-        $last_entry = array_pop($this->databaseContentsStack);
+        // Commit the database content to the previous on the stack.
+        $entry_to_commit = $this->databaseContentsStack[$name];
+        unset($this->databaseContentsStack[$name]);
         end($this->databaseContentsStack);
         $end = key($this->databaseContentsStack);
-        $this->databaseContentsStack[$end] = $last_entry;
+        $this->databaseContentsStack[$end] = $entry_to_commit;
       }
     }
   }
diff --git a/core/tests/Drupal/Tests/Core/Database/Driver/fake/FakeConnectionTest.php b/core/tests/Drupal/Tests/Core/Database/Driver/fake/FakeConnectionTest.php
index 12a4e24..7e5fc34 100644
--- a/core/tests/Drupal/Tests/Core/Database/Driver/fake/FakeConnectionTest.php
+++ b/core/tests/Drupal/Tests/Core/Database/Driver/fake/FakeConnectionTest.php
@@ -13,6 +13,11 @@
 use Drupal\Core\Database\TransactionOutOfOrderException;
 use Drupal\Tests\UnitTestCase;
 
+/**
+ * Tests the fake database connection.
+ *
+ * @coversDefaultClass \Drupal\Core\Database\Driver\fake\FakeConnection
+ */
 class FakeConnectionTest extends UnitTestCase {
 
   /**