When I apply the attribute required true in select_tree field_type, the post is not saved (action save is not fired when I click on button publish/update).
My code:
array(
'id' => 'category-and-types',
'type' => 'taxonomy',
'name' => esc_html__( 'Categoria, Tipo e Subtipo', 'webpesados' ),
'placeholder' => esc_html__( 'Selecione', 'webpesados' ),
'taxonomy' => 'category',
'field_type' => 'select_tree',
'class' => 'web_select_tree',
'columns' => 6,
'attributes' => array(
'required' => false,
),
.
