Checklist

• I have read the appropriate section in the contributing
  guidelines
• I believe this issue is a problem with polybar itself and not a misconfiguration on my part.
• I have searched for other open and cl

Here is the config for my "capture" module

"pulseaudio#capture": {
  "format": "{format_source}",
  "format-source": "",
  "format-source-muted": ""
}

Its goal is to display the microphone icon only when it is not muted.
It works as intended. However when it is muted, the module is still present in the bar, showing nothing but still taking its space (as tested by setting a differ