stpyvista display blank region in browser (tested with provided examples)

[anciaux]

Dear developers,

Thanks a lot for this project.

For some reason something go broken recently, and the rendered box does not appear anymore.

The script I used is:

import streamlit as st
import pyvista as pv
from stpyvista import stpyvista

# ipythreejs does not support scalar bars :(
pv.global_theme.show_scalar_bar = False

# Initialize a plotter object
plotter = pv.Plotter(window_size=[400, 400])

# Create a mesh with a cube
mesh = pv.Cube(center=(0, 0, 0))

# Add some scalar field associated to the mesh
mesh['myscalar'] = mesh.points[:, 2]*mesh.points[:, 0]

# Add mesh to the plotter
plotter.add_mesh(mesh, scalars='myscalar', cmap='bwr', line_width=1)

# Final touches
plotter.view_isometric()

# Pass a key to avoid re-rendering at each time something changes in the page
stpyvista(plotter, key="pv_cube")

The versions of packages are

streamlit                1.20.0
pyvista                  0.38.5
stpyvista                0.0.5
stpyvista                0.0.5
pythreejs                2.3.0
ipywidgets               7.7.1
ipython                  8.4.0

I also join the log from chrome, showing some complaints about some "widgets".

localhost-1679643230547.log

Thank you very much for your help on this.

[edsaac]

Probably this same issue with pyvista deprecating the pythreejs backend.