New issue by hervyqa on void-packages repository

https://github.com/void-linux/void-packages/issues/35306

Description:
### System

* xuname:  
  output of `xuname` : `Void 5.15.17_1 x86_64 AuthenticAMD uptodate rrFFFFFF`
* package:  
  affected package(s) including the version: `lmms-1.2.2_2`

### Expected behavior
should show one type of each plugin. i tried it in appimage `lmms-1.2.2-linux-x86_64.AppImage`.

![Screenshot_20220130_124831](https://user-images.githubusercontent.com/45872139/151688398-dc2cf3e0-9ff0-4fbb-989b-0a2417815212.png)

### Actual behavior
lmms in voidlinux appear double from every plugin.

![Screenshot_20220130_124411](https://user-images.githubusercontent.com/45872139/151688470-d155a92a-1fce-4351-a3c4-d15045dff3ce.png)

### Steps to reproduce the behavior
- `xbps-install lmms`.
- click `Instrument Plugins`.
- appear double from every plugin.