Boolean options (e.g. from the replaygain2 or XQAF plugins) are being shown in the Quick Settings Menu options, but trigger multiple issues:

1. The plugin options are shown top level, not under their "Plugins" parent. When opening options a warning is shown:

 W: 23:34:11,198 ui/options/interface_quick_menu._make_tree:107: Parent 'plugins' not found for quick settings group 'xqaf_88a16689-663b-4d78-bc1c-2fd7698e51b0.XQAFOptionsPage'   

1. Even if selected, the options do not show up in the quick settings menu (it only shows options in settings)

As a direct bugfix plugin settings should be excluded from the quick settings options. Alternatively full support for plugin quick settings could be added.