[BUG] scattermapbox traces do not update correctly when the figure template changes as of dash 2.7.0

[AnnMarieW]

As of dash 2.7.0, px.scatter_mapbox traces do not update when the figure template is changed.

It might have something to do with this change?

Feature release 2.16.0 adds clustering to scattermapbox traces and restricted bounds to mapbox plots.

For example, in dash dash 2.6.2 it works correctly:

In dash 2.7.0, the traces are not updated but the legend and the hover info is correct for each template.

from dash import Dash, dcc, html, Input, Output
import plotly.express as px
import dash_bootstrap_components as dbc

app = Dash(__name__, external_stylesheets=[dbc.themes.BOOTSTRAP])

carshare = px.data.carshare()

figure_templates = [
    "plotly",
    "ggplot2",
    "seaborn",
    "simple_white",
    "plotly_white",
    "plotly_dark",
    "presentation",
    "xgridoff",
    "ygridoff",
    "gridon",
    "none",
]

change_figure_template = html.Div(
    [
        html.Div("Change Figure Template"),
        dcc.Dropdown(figure_templates, figure_templates[0], id="template"),
    ],
    className="pb-4",
)


app.layout = dbc.Container(
    [
        dbc.Row(dbc.Col(change_figure_template, lg=6)),
        dbc.Row(dbc.Col(html.Div(id="graphs"))),
    ],
    className="dbc p-4",
    fluid=True,
)


@app.callback(
    Output("graphs", "children"),
    Input("template", "value"),
)
def update_graph_theme(template):

    return dcc.Graph(
        figure=px.scatter_mapbox(
            carshare,
            lat="centroid_lat",
            lon="centroid_lon",
            color="peak_hour",
            size="car_hours",
            size_max=15,
            zoom=10,
            mapbox_style="carto-positron",
            title=f"Carshare <br> {template} figure template",
            template=template,
        ),
        className="border",
    )


if __name__ == "__main__":
    app.run_server(debug=True)

[archmoj]

Thanks for the report. Regression confirmed: plotly/plotly.js#6382

[rodrigoalatorre]

I've found a simmilar issue with graph_objects.Scattermapbox using 2.7.0

[archmoj]

This bug is addressed by https://github.com/plotly/plotly.js/releases/tag/v2.16.4.
Until next dash release you could provide plotly.js bundle in the asset folder to have the fix.

[ned2]

@AnnMarieW can confirm that your example is now working with Dash 2.7.1, which includes the Plotly 2.16.4 🎉