### Expected behavior

### Actual behavior

### Information

  - Which version of amsynth are you using?
  - Which build of amsynth are you using? (stand-alone application, LV2, DSSI, VST)
  - If using amsynth as a plugin, which host application are you using?
  - Which operating system & version are you using?

### Steps to reproduce the behavior

  1. ...
  2. ...