Tuurlijk/BackendLayouts.ts

## BackendLayouts.ts
lib.layout.content = COA
lib.layout.content {
    10 < styles.content.get
    10.select {
        where = colPos={field:colPos}
        where.insertData = 1
        where.stdWrap.noTrimWrap = || AND NOT sys_language_uid = 0|
        where.stdWrap.noTrimWrap.if.isTrue.postUserFunc = TypoScript\PageIsCopyModeTranslation->evaluate

        includeRecordsWithoutDefaultTranslation = 1
    }

    10.slide.field = slide
}

## PageIsCopyModeTranslation.php
<?php
namespace TypoScript;

/**
 *  Copyright notice
 *
 *  ⓒ 2017 ℳichiel ℛoos <michiel@michielroos.com>
 *  All rights reserved
 *
 *  This script is part of the TYPO3 project. The TYPO3 project is free
 *  software; you can redistribute it and/or modify it under the terms of the
 *  GNU General Public License as published by the Free Software Foundation;
 *  either version 2 of the License, or (at your option) any later version.
 *
 *  The GNU General Public License can be found at
 *  http://www.gnu.org/copyleft/gpl.html.
 *
 *  This script is distributed in the hope that it will be useful, but
 *  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 *  or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 *  more details.
 *
 *  This copyright notice MUST APPEAR in all copies of the script!
 */

use TYPO3\CMS\Core\SingletonInterface;

/**
 * Class PageIsCopyModeTranslation
 *
 * A page can be translated by translating each content element to another
 * language (translation mode) or by creating separate (not linked) content
 * elements on the translated page. In 'translation' mode there is a tight
 * coupling between content elements in each language. In Copy mode, the
 * user has more freedom.
 *
 * TYPO3 core does nog handle Copy mode well, therefore we need to detect
 * if a page is in copy mode and if so, exclude content elements in the
 * default language to avoid them showing up on a translated page in copy
 * mode.
 *
 * A page is in copy mode if nome of the visible elements (including timed
 * content elements) has a translation parent: l18n_parent.
 *
 * The result of this query is cached per page id and language
 *
 * @package TypoScript
 */
class PageIsCopyModeTranslation implements SingletonInterface
{
    /**
     * Static cache to avoid may database calls
     * when fetching elements for each colPos
     *
     * @var array
     */
    protected static $isCopyMode = [];

    /**
     * @var \TYPO3\CMS\Core\Database\DatabaseConnection
     */
    protected $databaseConnection;

    /**
     * Initialize
     */
    public function __construct()
    {
        $this->databaseConnection = $GLOBALS['TYPO3_DB'];
    }

    /**
     * Evaluate condition
     *
     * @return bool
     */
    public function evaluate()
    {
        $languageId = (int)$GLOBALS['TSFE']->sys_language_uid;
        if ($languageId === 0) {
            return false;
        }

        $pageId = (int)$GLOBALS['TSFE']->id;
        if (array_key_exists($languageId, self::$isCopyMode)
            && array_key_exists($pageId, self::$isCopyMode[$languageId])
        ) {
            return self::$isCopyMode[$languageId][$pageId];
        }

        $result = (array)$this->databaseConnection->exec_SELECTgetRows(
            'uid',
            'tt_content',
            'hidden = 0
             AND deleted = 0
             AND NOT l18n_parent = 0' .
            ' AND sys_language_uid = ' . (int)$GLOBALS['TSFE']->sys_language_uid .
            ' AND pid = ' . $pageId
        );
        $pageIsInCopyMode = count($result) === 0;
        self::$isCopyMode[$languageId][$pageId] = $pageIsInCopyMode;
        return $pageIsInCopyMode;
    }
}

## PageLayout.html
<html xmlns:f="http://typo3.org/ns/TYPO3/CMS/Fluid/ViewHelpers" data-namespace-typo3-fluid="true">
<f:layout name="Default"/>
<f:section name="header">
</f:section>
<f:section name="content">
	<main>
		<div class="container">
			<!--TYPO3SEARCH_begin-->
			<f:cObject typoscriptObjectPath="lib.layout.content" data="{colPos: 0}"/>
		</div>
		<f:cObject typoscriptObjectPath="lib.layout.content" data="{colPos: 5}"/>
	</main>
</f:section>
</html>
	lib.layout.content = COA
	lib.layout.content {
	10 < styles.content.get
	10.select {
	where = colPos={field:colPos}
	where.insertData = 1
	where.stdWrap.noTrimWrap = \|\| AND NOT sys_language_uid = 0\|
	where.stdWrap.noTrimWrap.if.isTrue.postUserFunc = TypoScript\PageIsCopyModeTranslation->evaluate

	includeRecordsWithoutDefaultTranslation = 1
	}

	10.slide.field = slide
	}
	<?php
	namespace TypoScript;

	/**
	* Copyright notice
	*
	* ⓒ 2017 ℳichiel ℛoos <michiel@michielroos.com>
	* All rights reserved
	*
	* This script is part of the TYPO3 project. The TYPO3 project is free
	* software; you can redistribute it and/or modify it under the terms of the
	* GNU General Public License as published by the Free Software Foundation;
	* either version 2 of the License, or (at your option) any later version.
	*
	* The GNU General Public License can be found at
	* http://www.gnu.org/copyleft/gpl.html.
	*
	* This script is distributed in the hope that it will be useful, but
	* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
	* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	* more details.
	*
	* This copyright notice MUST APPEAR in all copies of the script!
	*/

	use TYPO3\CMS\Core\SingletonInterface;

	/**
	* Class PageIsCopyModeTranslation
	*
	* A page can be translated by translating each content element to another
	* language (translation mode) or by creating separate (not linked) content
	* elements on the translated page. In 'translation' mode there is a tight
	* coupling between content elements in each language. In Copy mode, the
	* user has more freedom.
	*
	* TYPO3 core does nog handle Copy mode well, therefore we need to detect
	* if a page is in copy mode and if so, exclude content elements in the
	* default language to avoid them showing up on a translated page in copy
	* mode.
	*
	* A page is in copy mode if nome of the visible elements (including timed
	* content elements) has a translation parent: l18n_parent.
	*
	* The result of this query is cached per page id and language
	*
	* @package TypoScript
	*/
	class PageIsCopyModeTranslation implements SingletonInterface
	{
	/**
	* Static cache to avoid may database calls
	* when fetching elements for each colPos
	*
	* @var array
	*/
	protected static $isCopyMode = [];

	/**
	* @var \TYPO3\CMS\Core\Database\DatabaseConnection
	*/
	protected $databaseConnection;

	/**
	* Initialize
	*/
	public function __construct()
	{
	$this->databaseConnection = $GLOBALS['TYPO3_DB'];
	}

	/**
	* Evaluate condition
	*
	* @return bool
	*/
	public function evaluate()
	{
	$languageId = (int)$GLOBALS['TSFE']->sys_language_uid;
	if ($languageId === 0) {
	return false;
	}

	$pageId = (int)$GLOBALS['TSFE']->id;
	if (array_key_exists($languageId, self::$isCopyMode)
	&& array_key_exists($pageId, self::$isCopyMode[$languageId])
	) {
	return self::$isCopyMode[$languageId][$pageId];
	}

	$result = (array)$this->databaseConnection->exec_SELECTgetRows(
	'uid',
	'tt_content',
	'hidden = 0
	AND deleted = 0
	AND NOT l18n_parent = 0' .
	' AND sys_language_uid = ' . (int)$GLOBALS['TSFE']->sys_language_uid .
	' AND pid = ' . $pageId
	);
	$pageIsInCopyMode = count($result) === 0;
	self::$isCopyMode[$languageId][$pageId] = $pageIsInCopyMode;
	return $pageIsInCopyMode;
	}
	}
	<html xmlns:f="http://typo3.org/ns/TYPO3/CMS/Fluid/ViewHelpers" data-namespace-typo3-fluid="true">
	<f:layout name="Default"/>
	<f:section name="header">
	</f:section>
	<f:section name="content">
	<main>
	<div class="container">
	<!--TYPO3SEARCH_begin-->
	<f:cObject typoscriptObjectPath="lib.layout.content" data="{colPos: 0}"/>
	</div>
	<f:cObject typoscriptObjectPath="lib.layout.content" data="{colPos: 5}"/>
	</main>
	</f:section>
	</html>