Plotly animation_frame does not work in Shiny

shiny
,
1

I'm trying to create a Plotly figure with animation_frame. It all works fine when I'm running it in as a single plot in a separate file with fig.show(), but not within Shiny.

Here's my code:

    @render_widget
    def vaccinated_by_group():
        df = px.data.gapminder()
        fig = px.scatter(df, 
						 x="gdpPercap", 
						 y="lifeExp", 
						 animation_frame="year", 
						 animation_group="country",
                         size="pop", 
						 color="continent", 
						 hover_name="country",
                         log_x=True, 
						 size_max=55, 
						 range_x=[100, 100000], 
						 range_y=[25, 90])
        return fig

The figure is visible, and I can drag the slider and click the play and stop buttons, but nothing happens, ie the figure is not updated accordingly. I guess I could move the year slider to Shiny using the input_slider. This, however, would result in the plot being updated every time the user drags the slider and thus have a huge negative effect on user friendliness.

I've tried the approach described here: Animated Plotly Graph in PyShiny (Express) without success.

Any help would be greatly appreciated.