Plotly with multiple jupyter windows

When I create a plot with the Plots package using the plotlyjs() backend in a jupyter-notebook this works wonderfully at first.
But if I open a new browser window with the same notebook (and close the old one) I don’t get any plots displayed anymore. If I change the backend to gr() I see the plot again, but plotly(JS) then refuses to give anything out until I restart jupyter.
is it possible to reset the backend in such a case, so that plotly throws the plot into the new brwoser window?