Field group not loading collapsed when editing a front end post

Hi

When using the front end form and editing a post and using a field group with the option 'default_state' => 'collapsed' the form loads with the groups expanded and not collapsed. This works for new posts, just not for editing a post. Is there a reason it does not stay collapsed when editing a post?

shortcode
[mb_frontend_form id="dc-product" post_type="products" confirmation="Updated Product Successfully" submit_button="Update" allow_delete="true" ajax="true" edit="true"]

Field Group

[
	'type' => 'group',
	'id'   => 'brand',
	'name' => 'Brand Information',
	'group_title' => 'Brand',
	'clone' => false,
	'collapsible' => true,
	'default_state' => 'collapsed',
	'save_state' => true,
	'fields' => [
		[
			'type'  => 'text',
			'name'  => 'Brand Name', //label for form
			'id'    => 'product_brand',
			'required' => false,
			'columns' => 12,
		],
	]
]

thanks

Nick