Error in plotly express scatter with continuous_color_scale and marginal_x

Hello

i am logging this as i think this might be a bug. I found while building a Dash app but the same issue arises in a a jupyter notebook.

import plotly.express as px
df = px.data.iris()

below, it works as expected:

fig = px.scatter(df, x="sepal_width", y="sepal_length", color="sepal_length",color_continuous_scale='Viridis')
fig

so is the following

fig = px.scatter(df, x="sepal_width", y="sepal_length", color="sepal_length",marginal_x='box')
fig

But the following expression breaks down

fig = px.scatter(df, x="sepal_width", y="sepal_length", color="sepal_length",marginal_x='box',color_continuous_scale='Viridis')
fig

it looks like box marker is using 'V' of Viridis in the color_continuous_scale.

Thanks

Start by running the provided Python examples in a Jupyter notebook and compare the working cases with the combination of marginal_x='box' and color_continuous_scale='Viridis'. Trace how that combination builds the scatter and marginal box traces; done means the plot renders without the box marker using an incorrect color from the continuous scale.