TYPO3 Core

Before "Free mode" was introduced again, the fallbacks were only shown if "fallBackType" was set to "fallback" and thus the reload was needed. Now they are always shown, if the languageUid is > 0.

TCA for fallbackType and fallbacks

        'fallbackType' => [
            'label' => 'LLL:EXT:backend/Resources/Private/Language/locallang_siteconfiguration_tca.xlf:site_language.fallbackType',
            'displayCond' => 'FIELD:languageId:>:0',
--->        'onChange' => 'reload',
            'config' => [
                'type' => 'select',
                'renderType' => 'selectSingle',
                'items' => [
                    ['Strict: Show only translated content, based on overlays', 'strict'],
                    ['Fallback: Show default language if no translation exists', 'fallback'],
                    ['Free mode: Ignore translation and overlay concept, only show data from selected language', 'free'],
                ],
            ],
        ],
        'fallbacks' => [
            'label' => 'LLL:EXT:backend/Resources/Private/Language/locallang_siteconfiguration_tca.xlf:site_language.fallbacks',
--->        'displayCond' => 'FIELD:languageId:>:0',
            'config' => [
                'type' => 'select',
                'renderType' => 'selectMultipleSideBySide',
                'items' => [
                    ['Default Language', 0],
                ],
                'foreign_table' => 'sys_language',
                'size' => 5,
                'min' => 0,
            ],
        ],