Shortcode Always True in Widgets

[goxmedia]

When placing a shortcode within a text widget, it always executed regardless of whether or not the configuration is set to false:

Shortcode.php

public function renderCallback($attributes, $content = null)
{
    if (is_admin()) {
        return null;
    }

    $this->attributes = shortcode_atts($this->config->defaults, $attributes, $this->config->shortcode);
    $this->content    = $this->config->doShortcodeWithinContent === true
        ? do_shortcode($content)
        : $content;

    return $this->render();
}

Custom Shortcode

return [
'autoload' => true,
'classname' => '',
'config'   => [
    'shortcode'        => 'section',
    'defaults'         => [
        'link'         => '#',
        'thumbnail'    => '#',
        'header_tag'   => 'h3',
        'title'        => '',
        'button_title' => 'Access Now',
    ],
    'doShortcodeWithinContent' => false,
    'view'                     => $rootPath . 'src/Shortcode/views/section.php',
],
];

SidebarRegister.php

protected function initEvents()
{
    add_action('init', [$this, 'run'], 20);
    //add_filter('widget_text', 'do_shortcode');
}

Is this behavior expected since WP 4.9?

https://make.wordpress.org/core/2017/10/24/widget-improvements-in-wordpress-4-9/

[goxmedia]

@hellofromtonya