outdated translations not reflected on UI

Hi guys,

I have some basic content with a translatable field of type text
and several languages available, English being the default

I'm testing a simple workflow with translation, with the following steps:
1. create content in EN
2. translate to another language
3. update original EN version and flag translations as outdated

the translation is marked outdated correctly on the translate tab (node/{nid}/translations)
but it's not correctly marked on the TMGMT sources overview list (admin/tmgmt/sources)
screenshots attached

I looked into the tmgmt code and saw that it looks for the flag as follows:

$translations = $entity->getTranslationLanguages();
...
elseif (!empty($translations->data[$langcode]['translate'])) {
    $translation_status = 'outofdate';
}

but in core, there is the following code for setting the status:

$metadata = $this->manager->getTranslationMetadata($entity);
...
$metadata->setOutdated(...);

the data that the translation is outdated is there somewhere in the $entity, but it's protected
thus it needs to be taken from the the metadata somehow, but I'm not yet familiar with these
if you can tell me the right direction, I might be able to create a patch for this

thanks,
Reszli