Hi!
After upgrading from ACF 4(free) to ACF 5(free) on front-end form field with type ‘user’ stop working. In create new post form on front-end.
I see in Chrome DevTool that page make ajax POST query to self with form data:
action=acf%2Ffields%2Fuser%2Fquery&field_key=field_5aa59eaecb495&s=s&paged=1&nonce=&post_id=
but in result i have HTML page, not JSON.
But in admin zone in edit post this field is working as expected.
Code in page is start from code
<?php acf_form_head(); ?>
<?php get_header(); ?>
Fixed added to template <?php wp_footer(); ?>
also fixed twice post and does not worked upload files
https://www.advancedcustomfields.com/resources/using-acf_form-to-create-a-new-post/