Conditional Logic with Childe Taxonomy

Hi there -

I have a taxonomy that includes parent/child options.
I need to set up a condition to show a group based on whether the child is selected.

I can get the show/hide functionality to work when there are no child options related, but cannot it doesn't work when there are.

Here's a screen recording: https://www.awesomescreenshot.com/video/18566416?key=4e280436262f2fad7cf8c44c23021413
The start was meant to show the taxonomy IDs but they seemed to get cut off.
Here they are:
Taxonomy: Test options

<ul>
	<li>On = 106
</ul>
	<li>Options = 108
</li>
	     <li>On = 109
</li>
<ul>

Here's the PHP Code:

<div><?php
add_filter( 'rwmb_meta_boxes', 'your_prefix_function_name' );

function your_prefix_function_name( $meta_boxes ) {
    $prefix = '';

    $meta_boxes[] = [
        'id'         => 259,
        'post_types' => ['member-content'],
        'fields'     => [
            [
                'name'       => __( 'Taxonomy', 'your-text-domain' ),
                'id'         => $prefix . 'taxonomy_ouqiyz69ayl',
                'type'       => 'taxonomy_advanced',
                'taxonomy'   => ['test-option'],
                'field_type' => 'select_tree',
            ],
            [
                'name'    => __( 'Show when taxonomy is On (no child)', 'your-text-domain' ),
                'id'      => $prefix . 'show_when_parent_taxonomy_is_on',
                'type'    => 'text',
                'visible' => [
                    'when'     => [['taxonomy_ouqiyz69ayl', 'in', 106]],
                    'relation' => 'and',
                ],
            ],
            [
                'name'    => __( 'Show when child taxonomy is On', 'your-text-domain' ),
                'id'      => $prefix . 'child_taxonomy_on',
                'type'    => 'text',
                'visible' => [
                    'when'     => [['taxonomy_ouqiyz69ayl', 'in', ['109']]],
                    'relation' => 'and',
                ],
            ],
        ],
    ];

    return $meta_boxes;
}</div>

Any ideas?
Thanks!