How to use different images in translated Content Blocks (friendsoftypo3/content-blocks) with TYPO3 13?

I am running a current TYPO3 13.4.15 instance with the latest EXT:content-blocks. The translation of the texts are work like a charm (also with fallback).

Now I would like to use another image for the translated content what does not work.

My config.yaml looks like this:

...

fields:
  -
    label: Image
    identifier: image
    type: File
    allowed: common-image-types
    extendedPalette: true
    tca:
      config:
        behaviour:
          allowLanguageSynchronization: true
        appearance:
          showAllLocalizationLink: true
          showSynchronizationLink: true
          enabledControls:
            localize: true

I also added the following to:
EXT:sitepackage/Configuration/TCA/Overrides/tt_content.php

$col = 'PREFIX_image'; // I added the right prefix

if (isset($GLOBALS['TCA']['tt_content']['columns'][$col]['config'])) {
    $conf = &$GLOBALS['TCA']['tt_content']['columns'][$col]['config'];

    // Sprach-Umschalter unter dem Feld
    $conf['behaviour']['allowLanguageSynchronization'] = true;

    // IRRE-Lokalisierungs-UI im Bildfeld
    $conf['appearance']['showAllLocalizationLink'] = true;
    $conf['appearance']['showSynchronizationLink'] = true;
    $conf['appearance']['enabledControls']['localize'] = true;
    $conf['appearance']['useSortable'] = true;
}

The translation behaviour is shown correctly, see here:



But when I change the image always the original one is shown (fallback).

Does anyone know how to solve this issue?