PlotlyJS: subplots and individual layouts

The problem in my previous entry was not reproducible. It was entirely dependent on my data.

Below I present an MWE that can be easily reproducible.

1 - Defining shapes (two rectangles):

shapes1 = rect([5, 25], [10, 30],
                0, 1; fillcolor = "red", opacity = 0.1, line_width = 0,
                xref="x", yref = "paper");

2 - Producing the two individual plots:

function noise1()
    trace1 = scatter(;x=1:40, y=randn(40), name = "some")
    layout1 = Layout(;
	    shapes = shapes1,
	    title_text = "Some noise", 
	    title_x = 0.5,
	    hovermode = "x",
        titlefont_size = 16)
    fig1 = plot(trace1, layout1)
end
noise1()

function noise2()
    trace2 = scatter(;x=1:40, y=rand(40), name = "more")
    layout2 = Layout(;
		shapes = shapes1,
		title_text = "More noise", 
		title_x = 0.5,
		hovermode = "x",
        titlefont_size = 16)
   fig2 = plot(trace2, layout2)
end
noise2()

3 - Creating the subplots

fig3= [noise1() noise2()]
relayout!(fig3, Layout(; hovermode="x", shapes = shapes1))
fig3

The strange problem: why do shapes only appear in the first subplot? How can I force them to be in the second plot as well?
Thanks