Why does acf_form create 2 records at once?

Question

WordPress

Hello. Made a form in the template for adding reviews to the site.
Working domain trimedia.isp.regruhosting.ru/testimonial for understanding
This is the archive page of the "reviews" post type. Under it, a separate template made archive-testimonial.php.
Accordingly, as written in the manual, before get_header I call acf_form_head ();
The form itself is in my popup, and its code is in the footer.php template, here is the code:

acf_form(array(
   'post_id' => 'new_post',
   'post_title' => true,
   'new_post' => array(
        'post_type' => 'testimonial',
        'post_status' => 'draft'
   ),
   'return' => home_url('thank-you'),
   'submit_value' => 'оставить отзыв'    
));

Everything seems to be correct. But when sending, 2 entries are immediately created in the admin panel:

Google and did not find anything about this, in all the videos that I watched on this topic - they still do everything exactly at the output - one entry is obtained. Tell me where to dig...