TYPO3 Core

If an input field got as eval "datetime,required", the validation fails as soon as the given date is below 1970.

if the required is removed, everything is fine.

As an example: use ext:news and the datetime field.

        'datetime' => array(
            'exclude' => 0,
            'l10n_mode' => 'mergeIfNotBlank',
            'label' => $ll . 'tx_news_domain_model_news.datetime',
            'config' => array(
                'type' => 'input',
                'size' => 12,
                'max' => 20,
                'eval' => 'datetime',
                'default' => mktime(date('H'), date('i'), 0, date('m'), date('d'), date('Y'))
            )
        ),

tested in master but should be testable in any supported branch