Dear Justin,
I've checked with and it works, can you please tell me what's version you're using and provide your code to register meta boxes and define conditional logic?
Here's my snippet for example:
add_filter( 'rwmb_meta_boxes', function( $meta_boxes )
{
$meta_boxes[] = array(
'id' => 'brand_product',
'title' => 'Brands and Products',
'post_types' => array( 'post', 'page' ),
'context' => 'normal',
'priority' => 'high',
'fields' => array(
array(
'id' => 'show_checkboxlist',
'name' => 'Show Checkbox List',
'desc' => 'Show Checkbox List when this checkbox is checked',
'type' => 'checkbox'
),
array(
'id' => 'brand',
'name' => 'Brand',
'desc' => 'Pick Your Favourite Brand',
'type' => 'checkbox_list',
'options' => array(
'Apple' => 'Apple',
'Google' => 'Google',
'Microsoft' => 'Microsoft'
),
'visible' => array('show_checkboxlist', true)
)
)
);
return $meta_boxes;
} );
Best regards
Tan