TYPO3 Core

Well this could be an OSI8 (user mistakes) but I've tried every possible combination of the flexform behavior configuration.
When I have a Content Element with a custom inline element configured by flexform and create some inline elements everything is fine. But when i choose to translate all contents to another language (localization) the inline elements are always active in the default language and every change will also be applied on default language elements.

Maybe the options localizationMode or localizeChildrenAtParentLocalization doesn't work?

Heres an example flexform field configuration which won't work fine with localization:

<config>
    <type>inline</type>
    <foreign_table>tx_tgmirrelinks_domain_model_link</foreign_table>
    <minitems>0</minitems>
    <maxitems>99</maxitems>
    <foreign_sortby>sorting</foreign_sortby>
    <foreign_match_fields>
        <fieldname>themenLinks</fieldname>
    </foreign_match_fields>

    <appearance>
        <useSortable>1</useSortable>

        <showPossibleLocalizationRecords>1</showPossibleLocalizationRecords>
        <showRemovedLocalizationRecords>1</showRemovedLocalizationRecords>
        <showSynchronizationLink>1</showSynchronizationLink>

        <createNewRelationLinkTitle>LLL:EXT:cms/locallang_ttc.xlf:images.addFileReference</createNewRelationLinkTitle>
    </appearance>

    <behaviour>
        <localizationMode>select</localizationMode>
        <localizeChildrenAtParentLocalization>0</localizeChildrenAtParentLocalization>
    </behaviour>
</config>

• Create a flexform with an inline element
• Create some inline elements and save the CE in the default language
• Go to the localization view of the "Page" view and choose "Copy default content elements / Standardinhalte kopieren"
• Open the translated CE and watch the inline records of the default language are activated