Hi @elliot,
Thank you for your response. My problem does still exist.
Before you run the update_field function, does the post already have a value for some_json?
Yes, the post already has a value for some_json.
If so, was that value saved through the ACF interface?
No, I have set it via PHP with update_field(), as described in my first post.
Can you confirm that the correct field reference is saved under the value in the database?
The Key in my database is currently “temp_key_for_some_json”. With 4.1.8.1 is being renamed to “field_some_json” (when saving that post) and after that I cannot access the fields contents any longer with get_field(“some_json”).
