TYPO3 Core

Localizing inline records fails.

1. Use latest master
2. clone https://github.com/einpraegsam/powermail branch develop
3. create a new form + pages +fields
4. translate the page
5. translate the form
6. edit default form and add a new field record
7. switch to translated form record
8. try to translate the field with the localize button

What fails

I don't exactly went wrong but in FormInlineAjaxController::synchronizeLocalizeAction the $parentLanguage is now 0 even though it should be of course the uid of the sys_language of the translated page record.

Array
(
    [tx_powermail_domain_model_page] => Array
        (
            [4] => Array
                (
                    [inlineLocalizeSynchronize] => Array
                        (
                            [field] => fields
                            [language] => 0
                            [action] => localize
                        )

                )

        )
)

what I don't get is why the language is 0

Array
(
    [command] => edit
    [tableName] => tx_powermail_domain_model_page
    [vanillaUid] => 4
    [returnUrl] => /typo3/index.php?ajaxID=%2Fajax%2Frecord%2Finline%2Fsynchronizelocalize&ajaxToken=224bccb4da62dbab8eacf816189bf37eb0adc8b5
    [recordTitle] => 
    [parentPageRow] => 
    [neighborRow] => 
    [databaseRow] => Array
        (
            [uid] => 4
            [sys_language_uid] => Array
                (
                    [0] => 0
                )
...

in the DB it looks fine
select uid,sys_language_uid,l10n_parent from tx_powermail_domain_model_page where uid=4;

uid,sys_language_uid,l10n_parent
4,3,3