Band option does nothing for Plotty renderer

[OneOfCats]

I have a GeoTIFF file with 12 different bands. I can open it in QGIS and see 12 bands with different raster data (monthly solar data of the location). But when I open it in browser with leaflet-geotiff-2 , the band option does not have any effect. It always shows the first band, no matter which number I use. I do it in this way:

const rendererOptions = {
    displayMin: 0,
    displayMax: 150,
    //band: 500
  };
  const renderer = L.LeafletGeotiff.rgb(rendererOptions);

  const options = {
    renderer: renderer,
    band: 500,
    bounds: [[lat - 0.000910557, lng - 0.001185149], [lat + 0.000912543, lng + 0.001183351]]
  };
  
  return L.leafletGeotiff(url, options).addTo(map);

Tried this option in renderer config too as you can see, no effect. Tried RGB renderer, and it recognizes rBand, gBand, bBand options and sees different bands correctly. I am now using this renderer, but it feels hacky