Map legend breaks RadioItem

Dash Python
1

This map has two RadioItems options at bottom left of page. It starts with the regular value, as in image:

mymap
mymap.jpg1905×490 193 KB

The callback works well if user moves between charter and regular as many times as she wants. However, if the RadioItem is on regular and the user clicks on a legend item or clicks on a marker in order to isolate it in the map, the RadioItem stops working (the user cannot move to charter; nothing happens). Oddly enough, if RadioItem is on charter and the user isolates a marker, there is no problem; the RadioItem still works and the user can switch back to `regular.

In other words, user cannot choose charter if (RadioItem is on regular) AND (a marker is isolated).

Is this a bug in the RadioItem… because I’m loosing my mind?

app = dash.Dash()

app.layout = html.Div([
    dcc.Graph(id='graph'),
    dcc.RadioItems(id='type_picker',
        options=[
            {'label': 'regular', 'value': 'regular'},
            {'label': 'charter', 'value': 'charter'}
        ], 
    value='charter'
    ),

@app.callback(Output('graph', 'figure'),
              [Input('type_picker', 'value')])
def update_figure(selected_school):
    # Create Figure
    filtered_school_type = df4[df4['school_type'] == selected_school]
    interest_areas = list(filtered_school_type.interest1.unique())

    schools=[]
    for i in interest_areas:
        df_sub=filtered_school_type[filtered_school_type.interest1==i]
        schools.append(go.Scattermapbox(
                    lon = df_sub['Longitude'],
                    lat = df_sub['Latitude'], 
                    mode='markers',
                    customdata=df_sub['link'],
                    ...,
    ))
    return {
        'data': schools,
        'layout': go.Layout(
            clickmode= 'event+select',
            showlegend = True,
            mapbox=dict(
                accesstoken=mapbox_access_token,
                ...,
            ),  
        )
    }

if __name__ == '__main__':
    app.run_server()