TYPO3 Core

In the function \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::registerPageTSConfigFile() one can not enter a language string like LLL:EXT:my_ext/Resources/Private/Language/locallang_db.xlf:pages.pageTSconfig.my_ext_be_layouts because the title parameter will be concatenated with the extension key in braces, thus breaking the LLL replacement logic. If one does add the LLL string, the replacement will be an empty string.
Could we remove the extension key part or at least detect, if the title is a LLL string? It would be nice if we could use the LLL replacement logic here, too.