opacity for image layer has no effect

[meteoDaniel]

If I am overlaying an image to an scattermapbox, defining the opacity has no effect. Am I doing something wrong?

import plotly.graph_objects as go

fig = go.Figure(go.Scattermapbox(), layout=dict(width=600, height=450))
mapbox = dict(zoom= 4.5,
              style='open-street-map',
              center=dict(
                        lat=42,
                        lon=-74.5),
              layers=[
                  dict(
                  below ='',
                      opacity=0.6,
                  source = "https://docs.mapbox.com/mapbox-gl-js/assets/radar.gif",
                  sourcetype= "image",
                  coordinates =  [
                          [-80.425, 46.437], [-71.516, 46.437], [-71.516, 37.936], [-80.425, 37.93]
                                 ])
                     ])
fig.update_layout(mapbox=mapbox)
fig.show()

plotly version:
4.4.1

[emmanuelle]

@meteoDaniel indeed, the docstring https://plot.ly/python/reference/#layout-mapbox-layers-items-layer-opacity mentions that opacity has an effect on circle, line, fill, symbol layers but not image. If you think this is missing in the API, you can open an issue in the Javascript library https://github.com/plotly/plotly.js/issues/new