function comment_editor($settings, $editor_id)
{
    if($editor_id !== "replycontent") {
        return $settings;
    }

    $settings['tinymce'] = true;
    $settings['media_buttons'] = true;
    return $settings;
}
add_filter('wp_editor_settings', 'comment_editor', 10, 2);

Uncaught (in promise) TypeError: Cannot read property 'getNotificationManagerImpl' of undefined