@manipulate fails when opening Julia notebook in Jupyter

[flikkema]

A fully-repeatable error: When you open a notebook with a slider and run the cell, the slider moves but the plot does not change.

Here is the Julia script:

using Plots, Interact

@manipulate for N in 10:1:20
x = 1:N; # x : Plotting data on x-axis
y = rand(N); # y : Plotting data on y-axis
plot(x, y) # To draw plot
end

However, this works fine when typed into a new notebook, or when cut/pasted from a saved notebook into a new notebook.

A possible hint is that the following message appears when you open the saved notebook:
This WebIO widget was rendered for a Jupyter kernel that is no longer running. Re-run this cell to regenerate this widget.

This message does not appear when you type anew or cut/paste and run.

A second possible hint is that a problem also occurs in Pluto:
WebIO not detected.
Please read the troubleshooting guide for more information on how to resolve this issue.
https://juliagizmos.github.io/WebIO.jl/latest/troubleshooting/not-detected/

Package status appears OK:
(@v1.6) pkg> status
Status ~/.julia/environments/v1.6/Project.toml
[7073ff75] IJulia v1.23.2
[c601a237] Interact v0.10.4
[b964fa9f] LaTeXStrings v1.3.0
[f0f68f2c] PlotlyJS v0.18.8
[91a5bcdd] Plots v1.24.2
[c3e4b0f8] Pluto v0.17.2
[0f1e0344] WebIO v0.8.16

(@v1.6) pkg>

Finally, according to https://juliagizmos.github.io/WebIO.jl/latest/providers/ijulia/, locations are OK:
(base) cmp4165:~ pgf$ pip3 show jupyterlab | grep -i location
Location: /Users/pgf/opt/anaconda3/lib/python3.9/site-packages
(base) cmp4165:~ pgf$ pip3 show webio_jupyter_extension | grep -i location
Location: /Users/pgf/opt/anaconda3/lib/python3.9/site-packages

[flikkema]

For exact same issue, see also

https://stackoverflow.com/questions/69947376/julia-using-manipulate-creates-plot-but-doesnt-update-after-saving-notebook-a