Plotting multiple figures with subplots command only display the last figure in PythonPlot.jl

Plotting multiple figures with subplots command only display the last figure in both PythonPlot.jl and PyPlot.jl. Kindly run the program below.

using PythonPlot # Pyplot
pygui(true)

x = LinRange(0, 2*pi, 100)
f(x) = @. sin(x)
g(x) = @. cos(x)
h(x) = @. tan(x)

a1=subplots(3)
a1[1] = plot(x,f(x))
a1[2] = plot(x,g(x))
a1[3] = plot(x,h(x))

Start by running the Julia reproduction in issue #32 with PythonPlot.jl, then compare the same behavior in PyPlot.jl as requested. Trace the subplots and plot calls to determine why only the last figure is displayed; done means all three figures appear as intended.

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