Plotly FigureWidget Display Problem in Sphinx

[atharva-2001]

Dear Plotly Team,
I'm from TARDIS(https://github.com/tardis-sn/tardis) and I was working on upgrading the TARDIS environment and realized that our FigureWidget plots were no longer being rendered our sphinx documentation. To test this out, I made a simple sphinx example code that mimics some of the problem.

I made a notebook with some FigureWidget code and was able to display the FigureWidget on sphinx, if a cell was displaying the plot from the last line-
https://atharva-2001.github.io/panel-sphinx/figurewidget.html

But if in the notebook the same cells are removed, it results in empty plots.
https://atharva-2001.github.io/panel-sphinx/figurewidget_without_cell.html

The code that generates both of the notebooks is the same-
https://github.com/atharva-2001/panel-sphinx/blob/main/source/figurewidget.py

Would you mind letting me know if this is a bug or if there is something wrong with my code? Or if I should be using some specific renderer?

[gvwilson]

thanks for the issue report @atharva-2001 - I will see if I can find someone to look at this, but realistically it's going to be a while :-( thanks - @gvwilson