@naveen009 @Elliot I did below, but still auto populate?
acf_form(array(
'post_id' => "new",
'field_groups' => array(1677),
'submit_value' => "Versturen en nog één toevoegen",
'updated_message' => false,
'form' => true,
'form_attributes' => array('autocomplete' => "off"),
));
The form element has the autocomplete = “off”…
<form id="post" class="acf-form" action="" method="post" autocomplete="off">
UPDATE: For some reason I interupted the procedure of acf_form to save a post. I think this inserted some values in the DB which caused the problems in all my ACF forms. I deleted the DB and put an old DB from yesterday back and problems solved. Still need to find a way how to solve this now: http://support.advancedcustomfields.com/forums/topic/acf_form-stop-executing-and-return-error/
