Problem with syncing image in translatable entity

I'm having a similar issue with a File field.
The sites have 2 languages: English and French.
English is the main language, but for the content generating an issue, French version has been contributed first, so the "Original language" is French.
When synchronizing the English version first, the "Original language" becomes the English on the slave site and the File field is empty, but the File contributed in the French version of the master content has been synchronized.
Also, if I first synchronize the English File himself, it is correctly referenced in the English content when synchronized after.

I am expierencing the same problem since it was working in Drupal 10 before... it might be caused by a Drupal update

I did a little test with setting up 2 new local sites... on ddev...

main lang german secondary language englisch...
Default Article content made translateable including Image file...

exposed the sever via ngronk

when watching the ngrok traffic insepector i can see that the client is requesting...

/en/jsonapi/node/article/{uid}/field_image

which contains the english version of the file...
but is then fetching the German version of the file..

also tried upgraded to 4.0.x-dev and it behaves the same...

and i dug deeper into the the issue... it seems to be a bug in jsonapi of core...

https://www.drupal.org/project/drupal/issues/3314636 🐛 Json Api : Translation lost when loading revision with the resourceRevision parameter Needs work

patch 5 ( https://www.drupal.org/project/drupal/issues/3314636#comment-14738731 🐛 Json Api : Translation lost when loading revision with the resourceRevision parameter Needs work )

did resolve... the issue for me...