okay, now you’ve completely lost me.
render_field_setting() creates fields that are available to the admin when creating a new field group and adding a new field. This has nothing to do with the value that is saved to a field and these values are only saved to the field settings, which can be found in the “content” of the “acf-field” post type.
get_field() has noting to do with a field setting and is the value being saved when someone edits a post, or wherever the field group is located.
My guess here is that you are attempting to do something that should not be done with render_field_setting() and should be done by some other method.
