This shouldn’t be the case. I just tried with this example:
import dash
import dash_core_components as dcc
app = dash.Dash()
app.layout = dcc.Graph(
id='graph',
className='my-class',
figure={'data': [{'x': [1, 2, 3]}]}
)
if __name__ == '__main__':
app.run_server(debug=True)
