[BUGFIX] copy container

Fixes: #614
Relates to: #610

Author: achimfritz

Classes/Hooks/Datahandler/CommandMapPostProcessingHook.php

@@ -151,7 +151,7 @@ protected function copyOrMoveChildren(int $origUid, int $newId, int $containerId
                 if (!isset($origCmdMap['tt_content'][$origUid][$command]['update']['sys_language_uid'])) {
                     continue;
                 }
-                if ($origCmdMap['tt_content'][$origUid][$command]['update']['sys_language_uid'] === $record['sys_language_uid']) {
+                if ((int)$origCmdMap['tt_content'][$origUid][$command]['update']['sys_language_uid'] === $record['sys_language_uid']) {
                     continue;
                 }
                 $target = -$record['uid'];

Tests/Functional/Datahandler/DefaultLanguage/ContainerTest.php

@@ -367,4 +367,29 @@ public function copyContainerWithDataHandlerLoggingDisabled(): void
         $dataHandler->process_cmdmap();
         self::assertCSVDataSet(__DIR__ . '/Fixtures/Container/CopyContainerWithDataHandlerLoggingDisabledSysLogResult.csv');
     }
+
+    /**
+     * @test
+     */
+    public function copyContainerWithLanguageAsStringKeepsCopiedChildrenSorting(): void
+    {
+        $this->importCSVDataSet(__DIR__ . '/Fixtures/Container/CopyContainerKeepsSortingOfChildren.csv');
+        $cmdmap = [
+            'tt_content' => [
+                1 => [
+                    'copy' => [
+                        'action' => 'paste',
+                        'target' => 3,
+                        'update' => [
+                            'colPos' => 0,
+                            'sys_language_uid' => '0',
+                        ],
+                    ],
+                ],
+            ],
+        ];
+        $this->dataHandler->start([], $cmdmap, $this->backendUser);
+        $this->dataHandler->process_cmdmap();
+        self::assertCSVDataSet(__DIR__ . '/Fixtures/Container/CopyContainerKeepsSortingOfChildrenResult.csv');
+    }
 }